Define the kernel config symbol CONFIG_MFD_RB4XX_CPLD=n
to fix build breakage on non-mikrotik targets.
The driver was added for all ath79, but the symbol was only
defined for mikrotik subtarget.
Fixes: fa70b3a4bb ("ath79: add Mikrotik rb4xx series drivers")
Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>
[rearrange commit message]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
9c16c46e58