soc: bcm: Move power-domain drivers to the genpd dir

To simplify with maintenance let's move the bcm power-domain drivers to the
new genpd directory. Going forward, patches are intended to be managed
through a separate git tree, according to MAINTAINERS.

While moving the drivers, we end up with a directory for bcm63xx that only
contains a Kconfig file, which seems a bit silly. Let's therefore also move
the Kconfig options into the Kconfig file a directory above, as it allows
us to drop the directory too.

Cc: Florian Fainelli <[e-mail]>
Cc: Ray Jui <[e-mail]>
Cc: Scott Branden <[e-mail]>
Cc: <[e-mail]>
Cc: <[e-mail]>
Signed-off-by: Ulf Hansson <[e-mail]>

MAINTAINERS

···
 F:	drivers/irqchip/irq-bcm63*
 F:	drivers/irqchip/irq-bcm7*
 F:	drivers/irqchip/irq-brcmstb*
-F:	drivers/soc/bcm/bcm63xx
+F:	drivers/genpd/bcm/bcm63xx-power.c
 F:	include/linux/bcm963xx_nvram.h
 F:	include/linux/bcm963xx_tag.h
 
···
 L:	[e-mail]
 S:	Maintained
 T:	git https://github.com/broadcom/stblinux.git
-F:	drivers/soc/bcm/bcm63xx/bcm-pmb.c
+F:	drivers/genpd/bcm/bcm-pmb.c
 F:	include/dt-bindings/soc/bcm-pmb.h
 
 BROADCOM SPECIFIC AMBA DRIVER (BCMA)

drivers/genpd/Makefile

···
 obj-y					+= actions/
 obj-y					+= amlogic/
 obj-y					+= apple/
+obj-y					+= bcm/

drivers/genpd/bcm/Makefile

···
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_BCM_PMB)			+= bcm-pmb.o
+obj-$(CONFIG_BCM2835_POWER)		+= bcm2835-power.o
+obj-$(CONFIG_BCM63XX_POWER)		+= bcm63xx-power.o
+obj-$(CONFIG_RASPBERRYPI_POWER)		+= raspberrypi-power.o

drivers/soc/bcm/Kconfig

···
 
 	  If unsure, say N.
 
-source "drivers/soc/bcm/bcm63xx/Kconfig"
+config BCM_PMB
+	bool "Broadcom PMB (Power Management Bus) driver"
+	depends on ARCH_BCMBCA || (COMPILE_TEST && OF)
+	default ARCH_BCMBCA
+	select PM_GENERIC_DOMAINS if PM
+	help
+	  This enables support for the Broadcom's PMB (Power Management Bus) that
+	  is used for disabling and enabling SoC devices.
+
+if SOC_BCM63XX
+
+config BCM63XX_POWER
+	bool "BCM63xx power domain driver"
+	depends on BMIPS_GENERIC || (COMPILE_TEST && OF)
+	select PM_GENERIC_DOMAINS if PM
+	help
+	  This enables support for the BCM63xx power domains controller on
+	  BCM6318, BCM6328, BCM6362 and BCM63268 SoCs.
+
+endif # SOC_BCM63XX
+
 source "drivers/soc/bcm/brcmstb/Kconfig"
 
 endmenu

drivers/soc/bcm/Makefile

···
 # SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_BCM2835_POWER)	+= bcm2835-power.o
-obj-$(CONFIG_RASPBERRYPI_POWER)	+= raspberrypi-power.o
-obj-y				+= bcm63xx/
 obj-$(CONFIG_SOC_BRCMSTB)	+= brcmstb/

drivers/soc/bcm/bcm63xx/Kconfig

···
-# SPDX-License-Identifier: GPL-2.0-only
-if SOC_BCM63XX
-
-config BCM63XX_POWER
-	bool "BCM63xx power domain driver"
-	depends on BMIPS_GENERIC || (COMPILE_TEST && OF)
-	select PM_GENERIC_DOMAINS if PM
-	help
-	  This enables support for the BCM63xx power domains controller on
-	  BCM6318, BCM6328, BCM6362 and BCM63268 SoCs.
-
-endif # SOC_BCM63XX
-
-config BCM_PMB
-	bool "Broadcom PMB (Power Management Bus) driver"
-	depends on ARCH_BCMBCA || (COMPILE_TEST && OF)
-	default ARCH_BCMBCA
-	select PM_GENERIC_DOMAINS if PM
-	help
-	  This enables support for the Broadcom's PMB (Power Management Bus) that
-	  is used for disabling and enabling SoC devices.

drivers/soc/bcm/bcm63xx/Makefile

···
-# SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_BCM63XX_POWER) += bcm63xx-power.o
-obj-$(CONFIG_BCM_PMB)		+= bcm-pmb.o