clk: renesas: r8a77970: Add TPU clock

The TPU0 clock wasn't present in the original R8A77970 patch by Daisuke
Matsushita, it was added in a later BSP version...

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: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

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

@@ -127,6 +127,7 @@ static const struct mssr_mod_clk r8a77970_mod_clks[] __initconst = {
 	DEF_MOD("cmt2",			 301,	R8A77970_CLK_R),
 	DEF_MOD("cmt1",			 302,	R8A77970_CLK_R),
 	DEF_MOD("cmt0",			 303,	R8A77970_CLK_R),
+	DEF_MOD("tpu0",			 304,	R8A77970_CLK_S2D4),
 	DEF_MOD("sd-if",		 314,	R8A77970_CLK_SD0),
 	DEF_MOD("rwdt",			 402,	R8A77970_CLK_R),
 	DEF_MOD("intc-ex",		 407,	R8A77970_CLK_CP),