Fix build

Move instruction_simplifier_arm.cc to the arm source list to fix
full-eng builds.

Change-Id: Ic7fc884f5cc2acec5579dc417acece21b7e674aa
diff --git a/compiler/Android.mk b/compiler/Android.mk
index 410b2d0..16c6a7b 100644
--- a/compiler/Android.mk
+++ b/compiler/Android.mk
@@ -92,6 +92,8 @@
 	linker/arm/relative_patcher_thumb2.cc \
 	optimizing/code_generator_arm.cc \
 	optimizing/dex_cache_array_fixups_arm.cc \
+	optimizing/instruction_simplifier_arm.cc \
+	optimizing/instruction_simplifier_shared.cc \
 	optimizing/intrinsics_arm.cc \
 	utils/arm/assembler_arm.cc \
 	utils/arm/assembler_arm32.cc \
@@ -109,7 +111,6 @@
 	linker/arm64/relative_patcher_arm64.cc \
 	optimizing/nodes_arm64.cc \
 	optimizing/code_generator_arm64.cc \
-	optimizing/instruction_simplifier_arm.cc \
 	optimizing/instruction_simplifier_arm64.cc \
 	optimizing/instruction_simplifier_shared.cc \
 	optimizing/intrinsics_arm64.cc \