PM: AVS: rockchip-io: Move the driver to the rockchip specific drivers

The avs drivers are all SoC specific drivers that doesn't share any code.
Instead they are located in a directory, mostly to keep similar
functionality together. From a maintenance point of view, it makes better
sense to collect SoC specific drivers like these, into the SoC specific
directories.

Therefore, let's move the rockchip-io driver to the rockchip directory.

Signed-off-by: Ulf Hansson <[e-mail]>
Acked-by: Heiko Stuebner <[e-mail]>
Signed-off-by: Rafael J. Wysocki <[e-mail]>

drivers/power/avs/Kconfig

···
 
 	  To compile this driver as a module, choose M here: the module will
 	  be called qcom-cpr
-
-config ROCKCHIP_IODOMAIN
-	tristate "Rockchip IO domain support"
-	depends on POWER_AVS && ARCH_ROCKCHIP && OF
-	help
-	  Say y here to enable support io domains on Rockchip SoCs. It is
-	  necessary for the io domain setting of the SoC to match the
-	  voltage supplied by the regulators.

drivers/power/avs/Makefile

···
 # SPDX-License-Identifier: GPL-2.0-only
 obj-$(CONFIG_POWER_AVS_OMAP)		+= smartreflex.o
 obj-$(CONFIG_QCOM_CPR)			+= qcom-cpr.o
-obj-$(CONFIG_ROCKCHIP_IODOMAIN)		+= rockchip-io-domain.o

drivers/soc/rockchip/Kconfig

···
 	  In a lot of cases there also need to be default settings initialized
 	  to make some of them conform to expectations of the kernel.
 
+config ROCKCHIP_IODOMAIN
+	tristate "Rockchip IO domain support"
+	depends on OF
+	help
+	  Say y here to enable support io domains on Rockchip SoCs. It is
+	  necessary for the io domain setting of the SoC to match the
+	  voltage supplied by the regulators.
+
 config ROCKCHIP_PM_DOMAINS
         bool "Rockchip generic power domain"
         depends on PM

drivers/soc/rockchip/Makefile

···
 # Rockchip Soc drivers
 #
 obj-$(CONFIG_ROCKCHIP_GRF) += grf.o
+obj-$(CONFIG_ROCKCHIP_IODOMAIN) += io-domain.o
 obj-$(CONFIG_ROCKCHIP_PM_DOMAINS) += pm_domains.o