Revert "arch: arm: dts: agilex5: Set SDIO_SEL GPIO pin as output"

Remove GPIO hog configuration for SDIO_SEL pin as it is now handled
through the voltage regulator framework for SD ultra high speed mode
support. The GPIO pin 3 on portb controller is used to control the
level shifter for SD card I/O voltage switching.

The regulator-based approach provides proper voltage switching control
for UHS-I modes (SDR50, SDR104) while maintaining compatibility with
the MMC subsystem's voltage switching protocols.

This reverts commit b0dbc9fcb7.

Signed-off-by: Tanmay Kathpalia <tanmay.kathpalia@altera.com>
Reviewed-by: Tien Fong Chee <tien.fong.chee@altera.com>

arch/arm/dts/socfpga_agilex5-u-boot.dtsi

@@ -681,17 +681,6 @@
 	bootph-all;
 };
 
-&gpio1 {
-	/* Configure GPIO 1 pin 3 as output pin with value 0 during GPIO probe */
-	portb: gpio-controller@0{
-		sdio_sel {
-			gpio-hog;
-			gpios = <3 GPIO_ACTIVE_HIGH>;
-			output-low;
-		};
-	};
-};
-
 &i2c0 {
 	reset-names = "i2c";
 };

configs/socfpga_agilex5_defconfig

@@ -2,7 +2,6 @@ CONFIG_ARM=y
 CONFIG_SPL_SYS_DCACHE_OFF=y
 CONFIG_ARCH_SOCFPGA=y
 CONFIG_TEXT_BASE=0x80200000
-CONFIG_SPL_GPIO=y
 CONFIG_NR_DRAM_BANKS=3
 CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
 CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x80300000
@@ -79,8 +78,6 @@ CONFIG_ENV_RELOC_GD_ENV_ADDR=y
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_SPL_DM_SEQ_ALIAS=y
 CONFIG_SPL_ALTERA_SDRAM=y
-CONFIG_GPIO_HOG=y
-CONFIG_SPL_GPIO_HOG=y
 CONFIG_DWAPB_GPIO=y
 CONFIG_DM_I2C=y
 CONFIG_SYS_I2C_DW=y