clk: renesas: r8a77990: Add missing I2C7 clock

When trying to use I2C7 on R-Car E3:

    renesas-cpg-mssr e6150000.clock-controller: Cannot get module clock 1003: -2
    i2c-rcar e6690000.i2c: failed to add to PM domain always-on: -2
    i2c-rcar: probe of e6690000.i2c failed with error -2

Unlike other R-Car Gen3 SoCs, R-Car E3 has more than 7 I2C bus
interfaces.  Add the forgotten module clock for the 8th instance to fix
this.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/renesas/r8a77990-cpg-mssr.c

@@ -210,6 +210,7 @@ static const struct mssr_mod_clk r8a77990_mod_clks[] __initconst = {
 	DEF_MOD("i2c1",			 930,	R8A77990_CLK_S3D2),
 	DEF_MOD("i2c0",			 931,	R8A77990_CLK_S3D2),
 
+	DEF_MOD("i2c7",			1003,	R8A77990_CLK_S3D2),
 	DEF_MOD("ssi-all",		1005,	R8A77990_CLK_S3D4),
 	DEF_MOD("ssi9",			1006,	MOD_CLK_ID(1005)),
 	DEF_MOD("ssi8",			1007,	MOD_CLK_ID(1005)),