target-i386: Replace cpuid_*features fields with a feature word array

This replaces the feature-bit fields on both X86CPU and x86_def_t
structs with an array.

With this, we will be able to simplify code that simply does the same
operation on all feature words (e.g. kvm_check_features_against_host(),
filter_features_for_kvm(), add_flagname_to_bitmaps(), CPU feature-bit
property lookup/registration, and the proposed "feature-words" property)

The following field replacements were made on X86CPU and x86_def_t:

  (cpuid_)features         -> features[FEAT_1_EDX]
  (cpuid_)ext_features     -> features[FEAT_1_ECX]
  (cpuid_)ext2_features    -> features[FEAT_8000_0001_EDX]
  (cpuid_)ext3_features    -> features[FEAT_8000_0001_ECX]
  (cpuid_)ext4_features    -> features[FEAT_C000_0001_EDX]
  (cpuid_)kvm_features     -> features[FEAT_KVM]
  (cpuid_)svm_features     -> features[FEAT_SVM]
  (cpuid_)7_0_ebx_features -> features[FEAT_7_0_EBX]

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
diff --git a/target-i386/translate.c b/target-i386/translate.c
index 40f891d..524a0b4 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -8290,11 +8290,11 @@
     if (flags & HF_SOFTMMU_MASK) {
         dc->mem_index = (cpu_mmu_index(env) + 1) << 2;
     }
-    dc->cpuid_features = env->cpuid_features;
-    dc->cpuid_ext_features = env->cpuid_ext_features;
-    dc->cpuid_ext2_features = env->cpuid_ext2_features;
-    dc->cpuid_ext3_features = env->cpuid_ext3_features;
-    dc->cpuid_7_0_ebx_features = env->cpuid_7_0_ebx_features;
+    dc->cpuid_features = env->features[FEAT_1_EDX];
+    dc->cpuid_ext_features = env->features[FEAT_1_ECX];
+    dc->cpuid_ext2_features = env->features[FEAT_8000_0001_EDX];
+    dc->cpuid_ext3_features = env->features[FEAT_8000_0001_ECX];
+    dc->cpuid_7_0_ebx_features = env->features[FEAT_7_0_EBX];
 #ifdef TARGET_X86_64
     dc->lma = (flags >> HF_LMA_SHIFT) & 1;
     dc->code64 = (flags >> HF_CS64_SHIFT) & 1;