soc: amlogic: meson-clk-measure: Add missing REGMAP_MMIO dependency

This patchs adds a missing dependency on REGMAP_MMIO.
This cause the following build failure on SPARC:
drivers/soc/amlogic/meson-clk-measure.o: In function `meson_msr_probe':
meson-clk-measure.c:(.text+0xc4): undefined reference to `__devm_regmap_init_mmio_clk'
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

drivers/soc/amlogic/Kconfig

@@ -11,6 +11,7 @@ config MESON_CLK_MEASURE
 	bool "Amlogic Meson SoC Clock Measure driver"
 	depends on ARCH_MESON || COMPILE_TEST
 	default ARCH_MESON
+	select REGMAP_MMIO
 	help
 	  Say yes to support of Measuring a set of internal SoC clocks
 	  from the debugfs interface.