Function swap16

src/dolphin/src/eth/eth.c:80–83

static void exiinthandler(s32 chan, OSContext* context);

static inline u16 swap16(u16 val) {
    u16 ret = __lhbrx(&val, 0);
    return ret;
}

static inline u8 higher(u16 val) {
    return (val >> 8) & 0xff;