arm64: amlogic: select gxbb clk driver

The AmLogic clock controller code is used by both arm and arm64
architectures. Explicitly select the core code for all Meson (arm64)
builds, and also select the GXBB driver, since that's the way arm64 does
things.
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm64/Kconfig.platforms

@@ -82,6 +82,8 @@ config ARCH_MESON
 	bool "Amlogic Platforms"
 	select PINCTRL
 	select PINCTRL_MESON
+	select COMMON_CLK_AMLOGIC
+	select COMMON_CLK_GXBB
 	help
 	  This enables support for the Amlogic S905 SoCs.