Move CPU features into its own static library.

src/trusted/validator/x86/validate_x86.gyp

Index: src/trusted/validator/x86/validate_x86.gyp
diff --git a/src/trusted/validator/x86/validate_x86.gyp b/src/trusted/validator/x86/validate_x86.gyp
index f12f4e6aabdaac6fbed0bdb4d59201380d92902a..bfdacc0fbb0bc48ba37499f8257375c794929e63 100644
--- a/src/trusted/validator/x86/validate_x86.gyp
+++ b/src/trusted/validator/x86/validate_x86.gyp
@@ -19,8 +19,6 @@
         'sources': [
             'error_reporter.c',
             'halt_trim.c',
-            'nacl_cpuid.c',
-            'nacl_xgetbv.S',
             'ncinstbuffer.c',
             'x86_insts.c',
             'nc_segment.c',
@@ -72,6 +70,7 @@
           },
           'dependencies': [
             '<(DEPTH)/native_client/src/shared/platform/platform.gyp:platform',
+            '<(DEPTH)/native_client/src/trusted/cpu_features/cpu_features.gyp:cpu_features',
           ],
         },
         { 'target_name': 'ncval_base_verbose_x86_32',
@@ -95,6 +94,7 @@
           },
           'dependencies': [
             '<(DEPTH)/native_client/src/shared/platform/platform.gyp:platform64',
+            '<(DEPTH)/native_client/src/trusted/cpu_features/cpu_features.gyp:cpu_features64',
           ],
         },
         { 'target_name': 'ncval_base_verbose_x86_64',
@@ -118,6 +118,7 @@
           },
           'dependencies': [
             '<(DEPTH)/native_client/src/shared/platform/platform.gyp:platform',
+            '<(DEPTH)/native_client/src/trusted/cpu_features/cpu_features.gyp:cpu_features',
           ],
         },
         { 'target_name': 'ncval_base_verbose_x86_64',