media: imx214: Remove unnecessary self assignment in for loop

Clang warns when a variable is assigned to itself:

drivers/media/i2c/imx214.c:695:13: error: explicitly assigning value of
variable of type 'const struct reg_8 *' to itself
[-Werror,-Wself-assign]
        for (table = table; table->addr != IMX214_TABLE_END ; table++) {
             ~~~~~ ^ ~~~~~
1 error generated.

Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>