rock-s0: bump u-boot v2024.10 -> v2026.07 (build on trixie hosts)

Same trixie/SWIG-4.3 failure as rockpi-s: u-boot v2024.10's pre-generated
pylibfdt wrapper won't compile on trixie, killing the uboot artifact. Bump to
v2026.07 (the rk3308 tag luckfox-rk3308b-nova already builds).

rock-s0 carries one board patch (1120-mmcBootOnRockS0v1-1: SPL MMC access on
Rock S0 v1.1) — copied to patch/u-boot/v2026.07/board_rock-s0/ so the boot fix
isn't lost. Keeps rock-s0-rk3308_defconfig, uart0 DDR blob, BL31, binman.

Needs verification: the carried patch must still apply to v2026.07's
rk3308-rock-s0-u-boot.dtsi (rebase if context shifted, or drop if upstreamed),
plus an on-target boot/MMC check.

Signed-off-by: Igor Pecovnik <igor@armbian.com>

Author: igorpecovnik

config/boards/rock-s0.conf

@@ -17,8 +17,8 @@ SERIALCON="ttyS0"
 MODULES_BLACKLIST="rockchipdrm analogix_dp dw_mipi_dsi dw_hdmi gpu_sched lima hantro_vpu panfrost"
 HAS_VIDEO_OUTPUT="no"
 
-BOOTBRANCH_BOARD="tag:v2024.10"
-BOOTPATCHDIR="v2024.10"
+BOOTBRANCH_BOARD="tag:v2026.07-rc4"
+BOOTPATCHDIR="v2026.07"
 BOOT_SCENARIO="binman"
 DDR_BLOB="rk33/rk3308_ddr_589MHz_uart0_m0_v2.07.bin"
 BL31_BLOB="rk33/rk3308_bl31_v2.26.elf"

patch/u-boot/v2026.07/board_rock-s0/1120-mmcBootOnRockS0v1-1.patch

@@ -0,0 +1,42 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Brent Roman <genosenosor@gmail.com>
+Date: Sat, 16 Nov 2024 20:50:41 -0800
+Subject: Ensure Rock S0 v1.1 boards u-boot SPL can access MMC card
+
+Signed-off-by: Brent Roman <genosenosor@gmail.com>
+---
+ arch/arm/dts/rk3308-rock-s0-u-boot.dtsi | 15 ++++++++++
+ 1 file changed, 15 insertions(+)
+
+diff --git a/arch/arm/dts/rk3308-rock-s0-u-boot.dtsi b/arch/arm/dts/rk3308-rock-s0-u-boot.dtsi
+index 84ca2ee0d5..c0d7f7b651 100644
+--- a/arch/arm/dts/rk3308-rock-s0-u-boot.dtsi
++++ b/arch/arm/dts/rk3308-rock-s0-u-boot.dtsi
+@@ -5,10 +5,25 @@
+ &emmc_pwren {
+ 	bootph-pre-ram;
+ 	bootph-some-ram;
+ };
+ 
++&pcfg_pull_down {
++	bootph-pre-ram;
++	bootph-some-ram;
++};
++
++&sdmmc {
++	pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_det &sdmmc_pwren &sdmmc_bus4>;
++};
++
++&sdmmc_pwren {
++	bootph-pre-ram;
++	bootph-some-ram;
++	rockchip,pins = <4 RK_PD6 0 &pcfg_pull_down>;
++};
++
+ &uart0 {
+ 	bootph-all;
+ 	clock-frequency = <24000000>;
+ };
+ 
+-- 
+Created with Armbian build tools https://github.com/armbian/build