kbuild: mips: fix sed regexp to generate asm-offset.h

Changes to Makefile.kbuild ("kbuild: add -fverbose-asm to i386
Makefile") breaks asm-offset.h file on MIPS.  Other archs possibly
suffer this change too but I'm not sure.

Here is a fix just for MIPS.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
diff --git a/Kbuild b/Kbuild
index 95d6a00..2d4f95e 100644
--- a/Kbuild
+++ b/Kbuild
@@ -18,7 +18,7 @@
 	"/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"
 endef
 # Override default regexp for specific architectures
-sed-$(CONFIG_MIPS) := "/^@@@/s///p"
+sed-$(CONFIG_MIPS) := "/^@@@/{s/^@@@//; s/ \#.*\$$//; p;}"
 
 quiet_cmd_offsets = GEN     $@
 define cmd_offsets