arm: add _lshrdi3.S

Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/lib_arm/Makefile b/lib_arm/Makefile
index 241782c..c37e2e0 100644
--- a/lib_arm/Makefile
+++ b/lib_arm/Makefile
@@ -29,6 +29,7 @@
 GLSOBJS	+= _ashldi3.o
 GLSOBJS	+= _ashrdi3.o
 GLSOBJS	+= _divsi3.o
+GLSOBJS	+= _lshrdi3.o
 GLSOBJS	+= _modsi3.o
 GLSOBJS	+= _udivsi3.o
 GLSOBJS	+= _umodsi3.o