media: camss: csiphy: Make CSIPHY status macro cross-platform

media: camss: csiphy: Make CSIPHY status macro cross-platform

The current value of '0xb0' that represents the offset to the status
registers within the common registers of the CSIPHY has been changed on
the newer SOCs and it requires generalizing the macro using a new
variable 'common_status_offset'. This variable is initialized in the
csiphy_init() function.

Signed-off-by: Hangxiang Ma <hangxiang.ma@oss.qualcomm.com>
Signed-off-by: Bryan O'Donoghue <bod@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>