ANDROID: GKI: Build-in REGMAP_SPMI

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

BUILD.bazel

@@ -47,7 +47,6 @@ define_db845c(
         "crypto/michael_mic.ko",
         "drivers/base/regmap/regmap-sdw.ko",
         "drivers/base/regmap/regmap-slimbus.ko",
-        "drivers/base/regmap/regmap-spmi.ko",
         "drivers/bus/mhi/host/mhi.ko",
         "drivers/clk/qcom/clk-qcom.ko",
         "drivers/clk/qcom/clk-rpmh.ko",

arch/arm64/configs/gki_defconfig

@@ -382,7 +382,6 @@ CONFIG_HW_RANDOM=y
 CONFIG_I3C=y
 CONFIG_SPI=y
 CONFIG_SPI_MEM=y
-CONFIG_SPMI=y
 # CONFIG_SPMI_MSM_PMIC_ARB is not set
 # CONFIG_PINCTRL_SUN8I_H3_R is not set
 # CONFIG_PINCTRL_SUN50I_A64 is not set

arch/x86/configs/gki_defconfig

@@ -351,7 +351,6 @@ CONFIG_HPET=y
 CONFIG_I3C=y
 CONFIG_SPI=y
 CONFIG_SPI_MEM=y
-CONFIG_SPMI=y
 CONFIG_GPIOLIB=y
 CONFIG_GPIO_GENERIC_PLATFORM=y
 # CONFIG_HWMON is not set

init/Kconfig.gki

@@ -24,6 +24,8 @@ config GKI_HIDDEN_REGMAP_CONFIGS
 	bool "Hidden Regmap configs needed for GKI"
 	select REGMAP_IRQ
 	select REGMAP_MMIO
+	select REGMAP_SPMI
+	select SPMI
 	help
 	  Dummy config option used to enable hidden regmap configs.
 	  These are normally selected implicitly when a module