Add support for power supplies

Requires updating the kernel with a driver for the power supplies. The
current linux tree can be found in cesnet/2021-05-14.

Depends-on: https://cesnet-gerrit-czechlight/c/CzechLight/velia/+/4188
Depends-on: https://gerrit.cesnet.cz/c/CzechLight/velia/+/4188
Change-Id: I57f426feaf48a72b5b95c961e45f90323777d685
diff --git a/configs/czechlight_clearfog_defconfig b/configs/czechlight_clearfog_defconfig
index 9a2f461..08eca82 100644
--- a/configs/czechlight_clearfog_defconfig
+++ b/configs/czechlight_clearfog_defconfig
@@ -28,7 +28,7 @@
 BR2_ROOTFS_POST_SCRIPT_ARGS="-c $(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/clearfog/genimage.cfg"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.11.5"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.12.4"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/clearfog/patches/linux.patch"
 BR2_LINUX_KERNEL_DEFCONFIG="mvebu_v7"
 BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="$(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/clearfog/linux.fragment $(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/common/linux.fragment"