Add IIC groups clock and reset entries to CPG driver.
IIC Group A consists of IIC0 and IIC1. IIC Group B consists of
IIC2 and IIC3. To confuse things, IIC_PCLK0 is used by group A
and IIC_PCLK1 is used by group B.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Link: https://lore.kernel.org/r/20220819193944.337599-2-phil.edworthy@renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>