clk: renesas: r8a7795: Add IMR clocks

Add the IMR[0-3] clocks to the R8A7795 CPG/MSSR driver.

Based on the original (and large) patch by Konstantin Kozhevnikov
<Konstantin.Kozhevnikov@cogentembedded.com>.
Signed-off-by: Konstantin Kozhevnikov <Konstantin.Kozhevnikov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/clk/renesas/r8a7795-cpg-mssr.c

@@ -208,6 +208,10 @@ static const struct mssr_mod_clk r8a7795_mod_clks[] __initconst = {
 	DEF_MOD("vin0",			 811,	R8A7795_CLK_S2D1),
 	DEF_MOD("etheravb",		 812,	R8A7795_CLK_S3D2),
 	DEF_MOD("sata0",		 815,	R8A7795_CLK_S3D2),
+	DEF_MOD("imr3",			 820,	R8A7795_CLK_S2D1),
+	DEF_MOD("imr2",			 821,	R8A7795_CLK_S2D1),
+	DEF_MOD("imr1",			 822,	R8A7795_CLK_S2D1),
+	DEF_MOD("imr0",			 823,	R8A7795_CLK_S2D1),
 	DEF_MOD("gpio7",		 905,	R8A7795_CLK_CP),
 	DEF_MOD("gpio6",		 906,	R8A7795_CLK_CP),
 	DEF_MOD("gpio5",		 907,	R8A7795_CLK_CP),