interp: IF_CMP_INTERP helper macro

Signed-off-by: Pekka Enberg <penberg@kernel.org>
interp: if_icmpne

Signed-off-by: Pekka Enberg <penberg@kernel.org>
interp: if_icmplt

Signed-off-by: Pekka Enberg <penberg@kernel.org>
interp: if_icmpge

Signed-off-by: Pekka Enberg <penberg@kernel.org>
interp: if_icmpgt

Signed-off-by: Pekka Enberg <penberg@kernel.org>
interp: if_icmple

Signed-off-by: Pekka Enberg <penberg@kernel.org>