(multiple): Include stdint.h

(multiple): Include stdint.h

Some headers and source files have been using types such as uint32_t
without explicitly including stdint.h.

Explicitly include stdint.h where appropriate.

Signed-off-by: Yong Bakos <ybakos@humanoriented.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>