powerpc: fix LINT build

netmap currently doesn't build, take it out of LINT to prevent
hiding regressions in universe

Reviewed by:	jhibbits
Approved by:	sbruno

sys/conf/makeLINT.mk

@@ -53,6 +53,7 @@ LINT: ${NOTES} ${MAKELINT_SED}
 .if ${TARGET} == "powerpc"
 	# cat is available, not sure if cp is?
 	cat ${.TARGET} > ${.TARGET}64
+	echo "nodevice netmap"	>> ${.TARGET}
 	echo "machine	${TARGET} powerpc" >> ${.TARGET}
 	echo "machine	${TARGET} powerpc64" >> ${.TARGET}64
 .endif