package/board: fix RPi4 boot from aarch64 image

Fixes a minor regression after merge of BPi-R3.  The RPi4 device tree,
specifically regulator-sd-io-1v8 in bcm2711-rpi-4-b.dts, requires the
GPIO voltage regulator be built-in for the SD card controller.

Fixes #1197

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

Author: troglobit

package/board/banana-pi-r3/banana-pi-r3.mk

@@ -28,7 +28,7 @@ define BANANA_PI_R3_LINUX_CONFIG_FIXUPS
 	$(call KCONFIG_SET_OPT,CONFIG_USB_XHCI_MTK,m)
 	$(call KCONFIG_SET_OPT,CONFIG_PHY_MTK_TPHY,m)
 	$(call KCONFIG_SET_OPT,CONFIG_PHY_MTK_XSPHY,m)
-	$(call KCONFIG_SET_OPT,CONFIG_REGULATOR_GPIO,m)
+	$(call KCONFIG_SET_OPT,CONFIG_REGULATOR_GPIO,y)
 	$(call KCONFIG_SET_OPT,CONFIG_REGULATOR_MT6380,m)
 	$(call KCONFIG_SET_OPT,CONFIG_PWM_MEDIATEK,m)
 	$(call KCONFIG_SET_OPT,CONFIG_SENSORS_PWM_FAN,m)