clk: enable hi655x common clk automatically

Without COMMON_CLK_HI655X Wifi and bluetooth are non-functional on Hikey.
As suggested by Arnd, enable the driver automatically when the parent
driver is selected. With sensible defaults in place, we can leave other
choices for EXPERT.

Cc: John Stultz <john.stultz@linaro.org>
Cc: Wei Xu <xuwei5@hisilicon.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Suggested-by: NArnd Bergmann <arnd@linaro.org>
Signed-off-by: NRiku Voipio <riku.voipio@linaro.org>
Reviewed-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NStephen Boyd <sboyd@kernel.org>

drivers/clk/Kconfig

@@ -55,8 +55,10 @@ config COMMON_CLK_RK808
 	  by control register.
 
 config COMMON_CLK_HI655X
-	tristate "Clock driver for Hi655x"
-	depends on MFD_HI655X_PMIC || COMPILE_TEST
+	tristate "Clock driver for Hi655x" if EXPERT
+	depends on (MFD_HI655X_PMIC || COMPILE_TEST)
+	depends on REGMAP
+	default MFD_HI655X_PMIC
 	---help---
 	  This driver supports the hi655x PMIC clock. This
 	  multi-function device has one fixed-rate oscillator, clocked