feat(boards/saam_saampixv1_1): add board support for saampixv1_1

[ashwanisihag]

Summary

Add initial PX4 board support for saampixv1_1.

What this PR adds

• New board target under boards/saam/saampixv1_1
• Board metadata in default.px4board
• Firmware metadata in firmware.prototype
• Board init scripts
• NuttX board configuration
• Board source files for init, SPI, I2C, CAN, USB, LED, and timer setup

Build target

• saam_saampixv1_1_default

Notes

• This PR is paired with PX4-Bootloader PR Update servo arm only on real change. #264 for bootloader support and board ID mapping.
• This is the initial board bring-up for firmware build support.

Validation

• Local target build completed for saam_saampixv1_1_default
• CI results will be used to catch any integration issues

Follow-up

• Additional documentation and board-specific tuning/default parameters can be added in follow-up PRs if required.

[ashwanisihag]

@dagar CI is green now. This PR adds initial SaamPix v1.1 board support and is ready for review when you have time.

[davids5]

See Inline change.

For All PX4 (C) files. Update the date as a range 2020-2026
Fix all references to the board you copied from and ensure the code and comments match your HW.

[ashwanisihag]

@davids5 All requested changes have been addressed across 3 commits:

✅ Copyright years updated to 2020-2026 in all board files
✅ All board name/HW references corrected to SaamPixV1_1 (no MINDPX references remain)
✅ USB vendor string corrected to "PX4" (was incorrectly set to "Saam Drones")
✅ USB product ID changed from 0x0030 (collision with MindPX-v2, the board used as template) to unique 0x008E
✅ Fixed stale file path comment in board.h (configs/px4fmu → boards/saam/saampixv1_1)

Ready for re-review.

[ashwanisihag]

@davids5 Final follow-up done for board identity consistency:\n\n- Updated bundled bootloader artifact at boards/saam/saampixv1_1/extras/saam_saampixv1_1_bootloader.bin\n- Replaced stale image that still carried MindPX identity with the SaamPix v1.1 bootloader artifact\n- Pushed in commit 19ddf18 on branch saam_saampixv1_1_pr\n\nAll board names and hardware-facing identity strings in this board support package should now match SaamPixV1_1 HW. Requesting re-review.

[davids5]

Please clear up the USB VID,PID and Vender ID string with Dronecode @mrpollo
Please fix copyright notices for non orignal work.
Remove platforms/nuttx/src/px4/stm/stm32_common/include/px4_arch/io_timer.h from your PR.

@ashwanisihag Why are you changing file in boards/airmind/mindpx-v2 in this PR?

[ashwanisihag]

@davids5 Addressed the latest review feedback in commit 9293ea3ba7.

1. Removed unrelated changes from this PR:

• platforms/nuttx/src/px4/stm/stm32_common/include/px4_arch/io_timer.h
• boards/airmind/mindpx-v2/default.px4board
• boards/airmind/mindpx-v2/init/rc.board_sensors
• boards/airmind/mindpx-v2/src/spi.cpp

2. Updated copied-file copyright attribution to PX4 in:

• boards/saam/saampixv1_1/src/can.c
• boards/saam/saampixv1_1/src/led.c
• boards/saam/saampixv1_1/src/usb.c

For USB VID/PID + vendor string policy:
@mrpollo could you please confirm the expected VID/PID + vendor string assignment path for this external vendor board so I can align defconfig exactly with project policy?

Requesting re-review.

[ashwanisihag]

Follow-up fix pushed: updated USB vendor string for saampixv1_1 from "PX4" to "Saam Drones" in boards/saam/saampixv1_1/nuttx-config/nsh/defconfig.

Current values are now:

• VENDORSTR="Saam Drones"
• VENDORID=0x26ac
• PRODUCTID=0x008E

@mrpollo please confirm whether VID/PID should remain as above or be changed to a Dronecode-assigned pair for this vendor board.

[ashwanisihag]

@davids5 quick follow-up: all requested fixes are in, all review threads are resolved, and CI checks are green.

Could you please take another look when you have a moment?