media: i2c: st-vgxy61: Use asm intead of asm-generic

There is no point to specify asm-generic for the unaligned.h.
Drop the 'generic' suffix and move the inclusion to be after
the non-media linux/* ones.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>