clk: sunxi-ng: h616: Add clock/reset for GPADC

Add the GPADC required clock and reset which is used for the onboard
GPADC.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20240605172049.231108-3-macroalpha82@gmail.com


Signed-off-by: Chen-Yu Tsai <wens@csie.org>