ARM: shmobile: r8a7790: Correct typo in clocks

This is the r8a7790 SoC not the r8a77a4 SoC and
clocks are updated in r8a7790_clock_init not r8a73a4_clock_init.
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/mach-shmobile/clock-r8a7790.c

@@ -77,7 +77,7 @@ static struct sh_clk_ops followparent_clk_ops = {
 };
 
 static struct clk main_clk = {
-	/* .parent will be set r8a73a4_clock_init */
+	/* .parent will be set r8a7790_clock_init */
 	.ops	= &followparent_clk_ops,
 };