clk: create meson directory and move related drivers

In order to support the Amlogic G12A clock controller,
re-architect the clock files into a meson directory.

No functionnal changes.

MAINTAINERS entry is also updated.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/drivers/clk/meson/Kconfig b/drivers/clk/meson/Kconfig
new file mode 100644
index 0000000..2419a30
--- /dev/null
+++ b/drivers/clk/meson/Kconfig
@@ -0,0 +1,15 @@
+config CLK_MESON_GX
+	bool "Enable clock support for Amlogic GX"
+	depends on CLK && ARCH_MESON
+	default MESON_GX
+	help
+	  Enable clock support for the Amlogic GX SoC family, such as
+	  the S905, S905X/D and S912.
+
+config CLK_MESON_AXG
+	bool "Enable clock support for Amlogic AXG"
+	depends on CLK && ARCH_MESON
+	default MESON_AXG
+	help
+	  Enable clock support for the Amlogic AXG SoC family, such as
+	  the A113X/D