REGMAP_SPMI is a hidden symbol normally selected by other SPMI drivers,
but it wasn't built-in to GKI like other REGMAP APIs so vendors had to
build it downstream.
This is a small amount of code and can be modularized later.
For allmodconfig, select SPMI via Kconfig.gki instead of gki_defconfig,
because otherwise allmodconfig will build SPMI=m and REGMAP_SPMI=y,
which is not allowed.
Bug: 248307451
Signed-off-by: Alistair Delva <adelva@google.com>
Change-Id: Ic3833e3a2dc44386c12a2422562994a1581a549c
4c43a506ef