wait_for_bit_le32 and wait_for_bit_le16 use the raw I/O functions
which would default to big-endian on BE systems. Create the generic
equivalents to use the native endianness.
Signed-off-by: Kursad Oney <kursad.oney@broadcom.com> Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>