This patch allows building the modules with an absolute SUBDIRS path,
especially for building them out of tree.

Signed-Off-By: Johannes Berg <johannes@sipsolutions.net>

--- a/drivers/ieee1394/Makefile
+++ b/drivers/ieee1394/Makefile
@@ -18,7 +19,7 @@ obj-$(CONFIG_IEEE1394_AMDTP) += amdtp.o
 obj-$(CONFIG_IEEE1394_CMP) += cmp.o
 
 quiet_cmd_oui2c = OUI2C   $@
-      cmd_oui2c = $(CONFIG_SHELL) $(srctree)/$(src)/oui2c.sh < $< > $@
+      cmd_oui2c = $(CONFIG_SHELL) $(src)/oui2c.sh < $< > $@
 
 targets := oui.c
 $(obj)/oui.o: $(obj)/oui.c