clk: renesas: r9a09g077: Add MTU3 module clock
The Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs have a MTU3
block connected to the PCLKH and with a module clock controlled by
register 0x308, bit 0.
Add support for the module clock.
Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260410163530.383818-2-cosmin-gabriel.tanislav.xa@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>