Fix arm gyp files, lithium files where not added.

Review URL: http://codereview.chromium.org/5558009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5938 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

tools/gyp/v8.gyp

@@ -540,6 +540,10 @@
             '../../src/arm/full-codegen-arm.cc',
             '../../src/arm/ic-arm.cc',
             '../../src/arm/jump-target-arm.cc',
+            '../../src/arm/lithium-codegen-arm.cc',
+            '../../src/arm/lithium-codegen-arm.h',
+            '../../src/arm/lithium-arm.cc',
+            '../../src/arm/lithium-arm.h',
             '../../src/arm/macro-assembler-arm.cc',
             '../../src/arm/macro-assembler-arm.h',
             '../../src/arm/regexp-macro-assembler-arm.cc',