power: avs: qcom-cpr: make sure that regmap is available

drivers/power/avs/qcom-cpr.c:402:4:
error: implicit declaration of function ‘regmap_multi_reg_write’
Signed-off-by: Niklas Cassel <nks@flawful.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/power/avs/Kconfig

@@ -16,6 +16,7 @@ config QCOM_CPR
 	tristate "QCOM Core Power Reduction (CPR) support"
 	depends on POWER_AVS
 	select PM_OPP
+	select REGMAP
 	help
 	  Say Y here to enable support for the CPR hardware found on Qualcomm
 	  SoCs like QCS404.