[media] media: i2c: remove duplicate checks for EPERM in dbg_g/s_register

This patch removes check for EPERM in dbg_g/s_register of subdevice
drivers as this check is already performed by core.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --cc drivers/media/i2c/ad9389b.c
Simple merge

diff --cc drivers/media/i2c/adv7183.c
Simple merge

diff --cc drivers/media/i2c/adv7604.c
Simple merge

diff --cc drivers/media/i2c/cs5345.c
Simple merge

diff --cc drivers/media/i2c/cx25840/cx25840-core.c
Simple merge

diff --cc drivers/media/i2c/m52790.c
Simple merge

diff --cc drivers/media/i2c/mt9v011.c
Simple merge

diff --cc drivers/media/i2c/ov7670.c
Simple merge

diff --cc drivers/media/i2c/saa7115.c
Simple merge

diff --cc drivers/media/i2c/saa7127.c
Simple merge

diff --cc drivers/media/i2c/saa717x.c
Simple merge

diff --cc drivers/media/i2c/ths7303.c
Simple merge

diff --cc drivers/media/i2c/tvp5150.c
Simple merge

diff --cc drivers/media/i2c/tvp7002.c
Simple merge

diff --cc drivers/media/i2c/upd64031a.c
Simple merge

diff --cc drivers/media/i2c/upd64083.c
Simple merge

diff --cc drivers/media/i2c/vs6624.c
Simple merge