clk: renesas: r9a09g077: Add ADC module clocks

clk: renesas: r9a09g077: Add ADC module clocks

Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs have three 12-bit
ADC peripherals, each with their own peripheral clock.

For conversion, they use the PCLKL clock.

Add their clocks to the list of module clocks.

Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20250923160524.1096720-2-cosmin-gabriel.tanislav.xa@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>