Fix warnings from gcc-4.3.0 build on a ppc host

* The cfi_flash.c memset fix actual allows the board to boot so there is
  a bit more going on here than just resolving warnings associated with
  uninitialized variables.

* include/asm/bitops.h:302: warning: '__swab32p' is static but used in
  inline function 'ext2_find_next_zero_bit' which is not static

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>