I2C_CHARDEV used to be enabled in mt7621/config-5.4. Enable it in the 5.10 config, as it's required for PoE control on Unifi Switch Flex. Fixes: b4aad29a1d ("ramips: add support for kernel 5.10") Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
b4aad29a1d