INFINIBAND: Remove 'TOPDIR' from Makefiles

This patch removes TOPDIR from infiniband Makefile and delete
one include statement pointing to a non-existing directory

Cc: Roland Dreier <[email protected]>
Cc: Sean Hefty <[email protected]>
Cc: Hal Rosenstock <[email protected]>
Signed-off-by: WANG Cong <[email protected]>
Signed-off-by: Sam Ravnborg <[email protected]>

Author: congwang

drivers/infiniband/hw/cxgb3/Makefile

@@ -1,5 +1,4 @@
-EXTRA_CFLAGS += -I$(TOPDIR)/drivers/net/cxgb3 \
-		-I$(TOPDIR)/drivers/infiniband/hw/cxgb3/core
+EXTRA_CFLAGS += -Idrivers/net/cxgb3
 
 obj-$(CONFIG_INFINIBAND_CXGB3) += iw_cxgb3.o