Fix up maemo port after byte swap header refactoring

Turns out maemo's old gcc 4.2.1 doesn't include any arch
optimized swapXX() functions, just plain C implementations.

Before we pull in lots of linux kernel headers for the
C implementation, just stick to rockbox's own version.

Change-Id: Ic28b41b52fe47f814c7f3897ce15334a42b6c5e2
Add newlines at the end of the file

Quiet maemo's gcc 4.2.1 compiler warning.

Change-Id: I35dfb2c0cb269b05edd62adf71fe0308a4b9ba5b