mediatek: mt7629: manually add missing kconfig

These options doesn't show up unless some kernel packages are selected,
so they are not covered by kernel_menuconfig.
Manually add them so that a build with all kmods can pass without user
interaction.

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>

target/linux/mediatek/mt7629/config-5.10

@@ -143,6 +143,7 @@ CONFIG_IRQ_FORCED_THREADING=y
 CONFIG_IRQ_TIME_ACCOUNTING=y
 CONFIG_IRQ_WORK=y
 # CONFIG_LEDS_BRIGHTNESS_HW_CHANGED is not set
+# CONFIG_LEDS_UBNT_LEDBAR is not set
 CONFIG_LIBFDT=y
 CONFIG_LLD_VERSION=0
 CONFIG_LOCK_DEBUGGING_SUPPORT=y
@@ -159,6 +160,7 @@ CONFIG_MACH_MT7629=y
 CONFIG_MDIO_BUS=y
 CONFIG_MDIO_DEVICE=y
 CONFIG_MDIO_DEVRES=y
+# CONFIG_MEDIATEK_MT6577_AUXADC is not set
 CONFIG_MEDIATEK_WATCHDOG=y
 CONFIG_MEMFD_CREATE=y
 CONFIG_MFD_SYSCON=y
@@ -186,6 +188,7 @@ CONFIG_MTK_INFRACFG=y
 # CONFIG_MTK_PMIC_WRAP is not set
 CONFIG_MTK_SCPSYS=y
 CONFIG_MTK_SPI_NAND=y
+# CONFIG_MTK_THERMAL is not set
 CONFIG_MTK_TIMER=y
 CONFIG_MUTEX_SPIN_ON_OWNER=y
 CONFIG_NEED_DMA_MAP_STATE=y