bcm53xx: use backported BCM5301X patches from stblinux soc/next Signed-off-by: Rafał Miłecki <zajec5@gmail.com> SVN-Revision: 47807
bcm53xx: add linux 4.4 support Signed-off-by: Rafał Miłecki <zajec5@gmail.com> SVN-Revision: 47703