clk: renesas: r8a77970: Add CMT clocks

Add the R8A77970 CMT module clocks.

Based on the original (and large) patch by Vladimir Barinov.
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Chris Paterson <chris.paterson2@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/clk/renesas/r8a77970-cpg-mssr.c

@@ -118,6 +118,10 @@ static const struct mssr_mod_clk r8a77970_mod_clks[] __initconst = {
 	DEF_MOD("mfis",			 213,	R8A77970_CLK_S2D2),
 	DEF_MOD("sys-dmac2",		 217,	R8A77970_CLK_S2D1),
 	DEF_MOD("sys-dmac1",		 218,	R8A77970_CLK_S2D1),
+	DEF_MOD("cmt3",			 300,	R8A77970_CLK_R),
+	DEF_MOD("cmt2",			 301,	R8A77970_CLK_R),
+	DEF_MOD("cmt1",			 302,	R8A77970_CLK_R),
+	DEF_MOD("cmt0",			 303,	R8A77970_CLK_R),
 	DEF_MOD("sd-if",		 314,	R8A77970_CLK_SD0),
 	DEF_MOD("rwdt",			 402,	R8A77970_CLK_R),
 	DEF_MOD("intc-ex",		 407,	R8A77970_CLK_CP),