mediatek: Refresh kernel configuration

mediatek: Refresh kernel configuration

I selected one subtarget after the other and refreshed their
configuration using this command:
  make kernel_oldconfig CONFIG_TARGET=subtarget

For MT7629 I had to re-add CONFIG_LEDS_SMARTRG_LED manually.
Otherwise, building MT7629 with ALL_KMODS we get prompted for
LEDS_SMARTRG_LED and this will break CI and in future buildbot
compilation. See commit 6bdea8c7bd85 ("mediatek: mt7629: 6.6: disable
LEDS_SMARTRG_LED by default") for more details.

Signed-off-by: Martin Schiller <ms@dev.tdt.de>