scsi: change to new flag variable

Replace EXTRA_CFLAGS with ccflags-y.

Signed-off-by: matt mooney <mfm@muteddisk.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
diff --git a/drivers/scsi/lpfc/Makefile b/drivers/scsi/lpfc/Makefile
index ad05d6e..14de249 100644
--- a/drivers/scsi/lpfc/Makefile
+++ b/drivers/scsi/lpfc/Makefile
@@ -19,10 +19,8 @@
 # *******************************************************************/
 ######################################################################
 
-ifneq ($(GCOV),)
-  EXTRA_CFLAGS += -fprofile-arcs -ftest-coverage
-  EXTRA_CFLAGS += -O0
-endif
+ccflags-$(GCOV) := -fprofile-arcs -ftest-coverage
+ccflags-$(GCOV) += -O0
 
 obj-$(CONFIG_SCSI_LPFC) := lpfc.o