remove rgb30 detection, as it's not reliable.

My R1 unit get's falsely detected as R2

projects/Rockchip/packages/u-boot/patches/RK3566/004-rgb30r2_probe.patch

@@ -1,99 +0,0 @@
-diff --git a/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c b/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c
-index b44c0b63fe..9f30c3a6d0 100644
---- a/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c
-+++ b/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c
-@@ -21,6 +21,7 @@
- #include <pwm.h>
- #include <stdlib.h>
- #include <video_bridge.h>
-+#include <i2c.h>
- 
- #define BOOT_BROM_DOWNLOAD	0xef08a53c
- 
-@@ -46,6 +47,7 @@
- #define SARADC_POWER_CTRL	BIT(3)
- 
- #define DTB_DIR			""
-+#define RGB30R2_VDD_CPU_REGULATOR_ADDR 0x40
- 
- struct rg3xx_model {
- 	const u16 adc_value;
-@@ -68,6 +70,7 @@ enum rgxx3_device_id {
- 	RG353PS,
- 	RG353VS,
- 	RGARCS,
-+	RGB30R2,
- };
- 
- static const struct rg3xx_model rg3xx_model_details[] = {
-@@ -150,6 +153,13 @@ static const struct rg3xx_model rg3xx_model_details[] = {
- 		.fdtfile = DTB_DIR "rk3566-anbernic-rg-arc-s.dtb",
- 		.detect_panel = 0,
- 	},
-+	[RGB30R2] = {
-+		.adc_value = 383, /* Gathered from second hand information */
-+		.board = "rk3566-powkiddy-rgb30",
-+		.board_name = "RGB30R2",
-+		.fdtfile = DTB_DIR "rk3566-powkiddy-rgb30r2.dtb",
-+		.detect_panel = 0,
-+	},
- };
- 
- struct rg353_panel {
-@@ -398,6 +408,29 @@ int rgxx3_detect_display(void)
- 	return 0;
- }
- 
-+/*
-+ * Detect vdd_cpu regulator, RGB30 has two revisions where this differs.
-+ */
-+int probe_rgb30r2_detect_vdd_cpu_regulator(void)
-+{
-+	struct udevice *bus, *dev;
-+	int ret;
-+
-+	ret = uclass_get_device(UCLASS_I2C, 0, &bus);
-+	if (ret) {
-+		printf("i2c0 bus not found, regulator probe attempt failed.\n");
-+        return ret;
-+    }
-+
-+    ret = dm_i2c_probe(bus, RGB30R2_VDD_CPU_REGULATOR_ADDR, 0, &dev);
-+	if (ret) {
-+		printf("Regulator not found found\n");
-+        return ret;
-+    }
-+
-+    return 0;
-+}
-+
- /* Detect which Anbernic RGXX3 device we are using so as to load the
-  * correct devicetree for Linux. Set an environment variable once
-  * found. The detection depends on the value of ADC channel 1, the
-@@ -452,6 +485,10 @@ int rgxx3_detect_device(void)
- 		}
- 	}
- 
-+    if (board_id == RGB30 && probe_rgb30r2_detect_vdd_cpu_regulator() == 0) {
-+        board_id = RGB30R2;
-+    }
-+
- 	if (board_id < 0)
- 		return board_id;
- 
-diff --git a/configs/anbernic-rgxx3-rk3566_defconfig b/configs/anbernic-rgxx3-rk3566_defconfig
-index f26801f4eb..ff9a6bd81b 100644
---- a/configs/anbernic-rgxx3-rk3566_defconfig
-+++ b/configs/anbernic-rgxx3-rk3566_defconfig
-@@ -52,6 +52,11 @@ CONFIG_ARM_SMCCC_FEATURES=y
- CONFIG_SCMI_FIRMWARE=y
- CONFIG_ROCKCHIP_GPIO=y
- CONFIG_SYS_I2C_ROCKCHIP=y
-+CONFIG_DM=y
-+CONFIG_DM_I2C=y
-+CONFIG_DM_I2C_COMPAT=y
-+CONFIG_SPL_I2C=y
-+CONFIG_I2C0_ENABLE=y
- CONFIG_MISC=y
- CONFIG_SUPPORT_EMMC_RPMB=y
- CONFIG_MMC_DW=y