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/Makefile b/drivers/clk/meson/Makefile
new file mode 100644
index 0000000..47a5ad5
--- /dev/null
+++ b/drivers/clk/meson/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (c) 2019 Baylibre, SAS
+# Jerome Brunet <jbrunet@baylibre.com>
+
+obj-$(CONFIG_CLK_MESON_GX) += gxbb.o
+obj-$(CONFIG_CLK_MESON_AXG) += axg.o
+