This fixes a bunch of endianness related sparse warnings reported by the
kbuild test robot as well as Ben Dooks.

Credits for the fix to safexcel.c go to Ben Dooks.
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Pascal van Leeuwen <pvanleeuwen@verimatrix.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>