[klibc] MIPS: add new libgcc functions

MIPS can't use the standard libgcc from klibc functions, so we need
to make sure we have a full compliment.  This adds the find-zero
functions and 64-bit shifts.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/usr/klibc/arch/mips/Makefile.inc b/usr/klibc/arch/mips/Makefile.inc
index 01f6f29..311bdfc 100644
--- a/usr/klibc/arch/mips/Makefile.inc
+++ b/usr/klibc/arch/mips/Makefile.inc
@@ -12,6 +12,11 @@
 	arch/$(KLIBCARCH)/vfork.o \
 	arch/$(KLIBCARCH)/setjmp.o \
 	arch/$(KLIBCARCH)/syscall.o \
+	libgcc/__clzsi2.o \
+	libgcc/__clzdi2.o \
+	libgcc/__ashldi3.o \
+	libgcc/__ashrdi3.o \
+	libgcc/__lshrdi3.o \
 	libgcc/__divdi3.o \
         libgcc/__moddi3.o \
         libgcc/__udivdi3.o \