soc: rockchip: Add a simple power model for ipa

This patch adds support to calculate the static power in milliwatts
consumed by devices.

Change-Id: Ied4ba5adecea45ff34b372a6e23c70882000aef3
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>

drivers/soc/rockchip/Kconfig

@@ -34,6 +34,17 @@ config ROCKCHIP_GRF
 	  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_IPA
+	bool "Rockchip IPA support"
+	depends on THERMAL && OF
+	default y
+	help
+	  Say y here to enable rockchip IPA.
+	  Add a simple power model for ipa to calculate static power and
+	  dynamic power.
+
+	  If unsure, say N.
+
 config ROCKCHIP_PM_DOMAINS
         bool "Rockchip generic power domain"
         depends on PM

drivers/soc/rockchip/Makefile

@@ -7,6 +7,7 @@ obj-$(CONFIG_ROCKCHIP_PM_DOMAINS) += pm_domains.o
 obj-$(CONFIG_FIQ_DEBUGGER) += rk_fiq_debugger.o
 obj-$(CONFIG_MMC_DW_ROCKCHIP)	+= sdmmc_vendor_storage.o
 obj-$(CONFIG_RK_FLASH)	+= flash_vendor_storage.o
+obj-$(CONFIG_ROCKCHIP_IPA)	+= rockchip_ipa.o
 obj-$(CONFIG_ROCKCHIP_PVTM)	+= rockchip_pvtm.o
 obj-$(CONFIG_ROCKCHIP_SUSPEND_MODE) += rockchip_pm_config.o