boards: ambiq: apollo510_evb: enable hardware CRC32 support

Enable the hardware CRC32 peripheral on the Apollo510 EVB board:

- Add SPDX license header to apollo510_evb.dts
- Add zephyr,crc chosen node pointing to &crc32
- Add crc0 alias for the CRC32 node
- Enable &crc32 node (status = "okay")
- Add crc to supported features in apollo510_evb.yaml
- Add board Kconfig fragment for the CRC sample selecting
  CRC32_IEEE variant and disabling CRC8

Signed-off-by: Richard Wheatley <richard.wheatley@ambiq.com>

Author: RichardSWheatley

boards/ambiq/apollo510_evb/apollo510_evb.dts

@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: Copyright 2025 Ambiq Micro Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 /dts-v1/;
 #include <ambiq/ambiq_apollo510.dtsi>
 #include "apollo510_evb-pinctrl.dtsi"
@@ -19,6 +25,7 @@
 		ambiq,xo32m = &xo32m_xtal;
 		ambiq,xo32k = &xo32k_xtal;
 		ambiq,extrefclk = &extrefclk;
+		zephyr,crc = &crc32;
 	};
 
 	aliases {
@@ -30,6 +37,7 @@
 		sw1 = &button1;
 		pwm-led0 = &pwm_led0;
 		sdhc0 = &sdio0;
+		crc0 = &crc32;
 	};
 
 	sram0: memory@SSRAM_BASE_NAME {
@@ -299,3 +307,7 @@ zephyr_udc0: &usb {
 &gpio192_223 {
 	status = "okay";
 };
+
+&crc32 {
+	status = "okay";
+};

boards/ambiq/apollo510_evb/apollo510_evb.yaml

@@ -12,6 +12,7 @@ supported:
   - adc
   - watchdog
   - counter
+  - crc
   - gpio
   - spi
   - i2c

samples/drivers/crc/boards/apollo510_evb.conf

@@ -0,0 +1,2 @@
+CONFIG_SAMPLE_CRC_VARIANT_CRC8=n
+CONFIG_SAMPLE_CRC_VARIANT_CRC32_IEEE=y