clk: renesas: r8a779g0: Add thermal clock

Add the module clock used by the Thermal Sensor/Chip Internal Voltage
Monitor/Core Voltage Monitor (THS/CIVM/CVM) on the Renesas R-Car V4H
(R8A779G0) SoC.

Based on a large patch in the BSP by Kazuya Mizuguchi.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/59461effd0d9f7a39e0c91352c87f2b7071b1891.1675958536.git.geert+renesas@glider.be

drivers/clk/renesas/r8a779g0-cpg-mssr.c

@@ -213,6 +213,7 @@ static const struct mssr_mod_clk r8a779g0_mod_clks[] __initconst = {
 	DEF_MOD("pfc1",		916,	R8A779G0_CLK_CL16M),
 	DEF_MOD("pfc2",		917,	R8A779G0_CLK_CL16M),
 	DEF_MOD("pfc3",		918,	R8A779G0_CLK_CL16M),
+	DEF_MOD("tsc",		919,	R8A779G0_CLK_CL16M),
 	DEF_MOD("ssiu",		2926,	R8A779G0_CLK_S0D6_PER),
 	DEF_MOD("ssi",		2927,	R8A779G0_CLK_S0D6_PER),
 };