Fix camera.v4l2 module build error

Undeclared uint8 data types are used in exif_utils.cpp file and this
change corrects their types as uint8_t instead.

Bug: 140885470
Test: mm
Change-Id: I2e48a134c24cd3f17a7b6bafdc815200ca546826
Signed-off-by: Changyeon Jo <changyeon@google.com>
1 file changed