drivers/staging: do not use EXTRA_CFLAGS

Usage of these flags has been deprecated for nearly 4 years by:

    commit f77bf014
    Author: Sam Ravnborg <sam@neptun.(none)>
    Date:   Mon Oct 15 22:25:06 2007 +0200

        kbuild: introduce ccflags-y, asflags-y and ldflags-y

Moreover, these flags (at least EXTRA_CFLAGS) have been documented for command
line use. By default, gmake(1) do not override command line setting, so this is
likely to result in build failure or unexpected behavior.

Replace their usage by Kbuild's `{as,cc,ld}flags-y'.

Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/cxd2099/Makefile

 obj-$(CONFIG_DVB_CXD2099) += cxd2099.o
 
-EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core/
-EXTRA_CFLAGS += -Idrivers/media/dvb/frontends/
-EXTRA_CFLAGS += -Idrivers/media/common/tuners/
+ccflags-y += -Idrivers/media/dvb/dvb-core/
+ccflags-y += -Idrivers/media/dvb/frontends/
+ccflags-y += -Idrivers/media/common/tuners/

drivers/staging/go7007/Makefile

@@ -20,15 +20,11 @@ go7007-y := go7007-v4l2.o go7007-driver.o go7007-i2c.o go7007-fw.o \
 s2250-y := s2250-board.o
 
 # Uncomment when the saa7134 patches get into upstream
-#ifneq ($(CONFIG_VIDEO_SAA7134),)
 #obj-$(CONFIG_VIDEO_SAA7134) += saa7134-go7007.o
-#EXTRA_CFLAGS += -Idrivers/media/video/saa7134 -DSAA7134_MPEG_GO7007=3
-#endif
+#ccflags-$(CONFIG_VIDEO_SAA7134:m=y) += -Idrivers/media/video/saa7134 -DSAA7134_MPEG_GO7007=3
 
 # S2250 needs cypress ezusb loader from dvb-usb
-ifneq ($(CONFIG_VIDEO_GO7007_USB_S2250_BOARD),)
-ccflags-y := -Idrivers/media/dvb/dvb-usb
-endif
+ccflags-$(CONFIG_VIDEO_GO7007_USB_S2250_BOARD:m=y) += -Idrivers/media/dvb/dvb-usb
 
 ccflags-y += -Idrivers/media/dvb/frontends
 ccflags-y += -Idrivers/media/dvb/dvb-core

drivers/staging/rtl8187se/Makefile

 
-#EXTRA_CFLAGS += -DCONFIG_IEEE80211_NOWEP=y
-#EXTRA_CFLAGS += -std=gnu89
-#EXTRA_CFLAGS += -O2
+#ccflags-y += -DCONFIG_IEEE80211_NOWEP=y
+#ccflags-y += -std=gnu89
+#ccflags-y += -O2
 #CC            = gcc
 
 ccflags-y := -DSW_ANTE

drivers/staging/rts_pstor/Makefile

-EXTRA_CFLAGS	:= -Idrivers/scsi
+ccflags := -Idrivers/scsi
 
 obj-$(CONFIG_RTS_PSTOR)	:= rts_pstor.o