PPC: Fix "Move regexp implementation into its own folder."

R=yangguo@chromium.org, jyan@ca.ibm.com, dstence@us.ibm.com, joransiu@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1319783002

Cr-Commit-Position: refs/heads/master@{#30391}

src/regexp/ppc/regexp-macro-assembler-ppc.h

@@ -7,6 +7,7 @@
 
 #include "src/macro-assembler.h"
 #include "src/ppc/assembler-ppc.h"
+#include "src/ppc/frames-ppc.h"
 #include "src/regexp/regexp-macro-assembler.h"
 
 namespace v8 {