media: video-i2c: get rid of two gcc warnings

After adding this driver, gcc complains with:

drivers/media/i2c/video-i2c.c:55:1: warning: 'static' is not at beginning of declaration [-Wold-style-declaration]
 const static struct v4l2_fmtdesc amg88xx_format = {
 ^~~~~
drivers/media/i2c/video-i2c.c:59:1: warning: 'static' is not at beginning of declaration [-Wold-style-declaration]
 const static struct v4l2_frmsize_discrete amg88xx_size = {
 ^~~~~

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>