arm64: qcom: don't select HAVE_PWRCTL when PCI=n

The new HAVE_PWRCTL option is defined in the PCI subsystem, so
selecting it unconditionally when PCI is disabled causes a harmless
warning:

WARNING: unmet direct dependencies detected for HAVE_PWRCTL
  Depends on [n]: PCI [=n]
  Selected by [y]:
  - ARCH_QCOM [=y]

Add 'if PCI' in the qualcomm platform to hide the warning.

Fixes: ed70aaac ("Kconfig: reduce the amount of power sequencing noise")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

arch/arm64/Kconfig.platforms

@@ -267,7 +267,7 @@ config ARCH_QCOM
 	bool "Qualcomm Platforms"
 	select GPIOLIB
 	select PINCTRL
-	select HAVE_PWRCTL
+	select HAVE_PWRCTL if PCI
 	help
 	  This enables support for the ARMv8 based Qualcomm chipsets.