staging: media: omap4iss: Replaces bit shift on 1 with BIT Macro

This patch fixes some of the checkpatch issue:

CHECK: Prefer using the BIT macro

Signed-off-by: Amarjargal Gundjalam <amarjargal.gundjalam@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>