Otherwise kernel 5.15 will fail to build on subtargets except for mt7621
that has enabled the config.
The disabled PINCTRL_AW9523 config disappears after a refresh, it needs
to be added back manually.
Fixes: 675cf75578 ("ramips: add config-5.15 for mt7620 subtarget")
Fixes: 001176994a ("ramips: add config-5.15 for mt76x8 subtarget")
Fixes: b9d9f33c33 ("ramips: add config-5.15 for rt288x subtarget")
Fixes: 0164dc0c25 ("ramips: add config-5.15 for rt305x subtarget")
Fixes: ef59da8669 ("ramips: add config-5.15 for rt3883 subtarget")
Signed-off-by: Sungbo Eo <mans0n@gorani.run>
Add Kernel config for testing Linux 5.15 for the rt305x subtarget.
Tested on ZyXEL NBG-419N, works but bad wireless performance.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
