clk: renesas: r8a779h0: 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 V4M
(R8A779H0) SoC.

Based on a patch in the BSP by Cong Dang.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/befac3e8342cd552f580d34be863ef84403c541f.1709722056.git.geert+renesas@glider.be

drivers/clk/renesas/r8a779h0-cpg-mssr.c

@@ -192,6 +192,7 @@ static const struct mssr_mod_clk r8a779h0_mod_clks[] = {
 	DEF_MOD("pfc0",		915,	R8A779H0_CLK_CP),
 	DEF_MOD("pfc1",		916,	R8A779H0_CLK_CP),
 	DEF_MOD("pfc2",		917,	R8A779H0_CLK_CP),
+	DEF_MOD("tsc2:tsc1",	919,	R8A779H0_CLK_CL16M),
 };
 
 /*