kernel: add missing Kconfig symbols

Found when building rockchip target (with kernel 6.12).

Signed-off-by: Tianling Shen <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/18685
Signed-off-by: Robert Marko <[email protected]>

target/linux/generic/config-6.12

@@ -1627,6 +1627,7 @@ CONFIG_DQL=y
 # CONFIG_DRM_PARADE_PS8622 is not set
 # CONFIG_DRM_PARADE_PS8640 is not set
 # CONFIG_DRM_PL111 is not set
+# CONFIG_DRM_POWERVR is not set
 # CONFIG_DRM_QXL is not set
 # CONFIG_DRM_RADEON is not set
 # CONFIG_DRM_RADEON_USERPTR is not set

target/linux/rockchip/armv8/config-6.6

@@ -550,6 +550,7 @@ CONFIG_RATIONAL=y
 # CONFIG_RAVE_SP_CORE is not set
 CONFIG_RCU_TRACE=y
 CONFIG_REALTEK_PHY=y
+CONFIG_REALTEK_PHY_HWMON=y
 CONFIG_REGMAP=y
 CONFIG_REGMAP_I2C=y
 CONFIG_REGMAP_IRQ=y