Support building x86 devices

Change-Id: I35e2b104c7da28160c4b66d648c4ae8e60470051

remove-minimal.xml

@@ -384,7 +384,6 @@
   <remove-project name="platform/prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.8" />
   <remove-project name="platform/prebuilts/gcc/linux-x86/host/x86_64-w64-mingw32-4.8" />
   <remove-project name="platform/prebuilts/gcc/linux-x86/mips/mips64el-linux-android-4.9" />
-  <remove-project name="platform/prebuilts/gcc/linux-x86/x86/x86_64-linux-android-4.9" />
   <remove-project name="platform/prebuilts/gdb/darwin-x86" />
   <remove-project name="platform/prebuilts/gdb/linux-x86" />
   <remove-project name="platform/prebuilts/go/darwin-x86" />

remove.xml

@@ -77,7 +77,6 @@
   <remove-project name="platform/hardware/broadcom/libbt" />
   <remove-project name="platform/hardware/broadcom/wlan" />
   <remove-project name="platform/hardware/intel/audio_media" />
-  <remove-project name="platform/hardware/intel/bootstub" />
   <remove-project name="platform/hardware/intel/common/bd_prov" />
   <remove-project name="platform/hardware/intel/common/libmix" />
   <remove-project name="platform/hardware/intel/common/libstagefrighthw" />