Staging: bcm2835-camera: Prefer kernel types

Fix the warning issued by checkpatch
Prefer kernel type 'u32' over 'uint32_t'.
Along with that include a blank line after a declaration
to maintain Linux kernel coding style.

Signed-off-by: Madhumitha Prabakaran <madhumithabiw@gmail.com>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>