kbuild: Fix bug in make deb-pkg when using seperate source and output directories

From: Ryan Anderson <ryan@michonline.com>

When running "make O=something deb-pkg", I get a failure that claims I
haven't configured my kernel (I have).  Running it a second time tells
me to run "make mrproper"  (include/linux/version.h got built on the
first run)

Original patch from:
From: Ajay Patel <patela@gmail.com>

With modifications from:
Signed-off-By: Ryan Anderson <ryan@michonline.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/scripts/package/Makefile b/scripts/package/Makefile
index 353b8ea5c32c..8afdef921cb7 100644
--- a/scripts/package/Makefile
+++ b/scripts/package/Makefile
@@ -59,7 +59,7 @@ $(objtree)/binkernel.spec: $(MKSPEC) $(srctree)/Makefile
         $(CONFIG_SHELL) $(MKSPEC) prebuilt > $@
         
 binrpm-pkg: $(objtree)/binkernel.spec
-        $(MAKE)
+        $(MAKE) KBUILD_SRC=
         set -e; \
         $(CONFIG_SHELL) $(srctree)/scripts/mkversion > $(objtree)/.tmp_version
         set -e; \
@@ -74,7 +74,7 @@ clean-files += $(objtree)/binkernel.spec
 #
 .PHONY: deb-pkg
 deb-pkg:
-        $(MAKE)
+        $(MAKE) KBUILD_SRC=
         $(CONFIG_SHELL) $(srctree)/scripts/package/builddeb
 
 clean-dirs += $(objtree)/debian/