generic_x86 support

Add in Makefiles and support files for x86 builds
  Based on changes by: wonjong.lee <wonjong.lee@windriver.com>
  Additional changes by: Mark Gross <mark.gross@intel.com>
  Additional changes by: Bruce Beare <brucex.j.beare@intel.com>

Change-Id: Id087411b282b1b68a0251e7f9cbbdde183549787
Signed-off-by: Bruce Beare <brucex.j.beare@intel.com>
diff --git a/target/board/generic_x86/buildspec-generic_x86.mk b/target/board/generic_x86/buildspec-generic_x86.mk
new file mode 100644
index 0000000..5c4e6a5
--- /dev/null
+++ b/target/board/generic_x86/buildspec-generic_x86.mk
@@ -0,0 +1,3 @@
+BUILD_ENV_SEQUENCE_NUMBER := 9
+DISABLE_DEXPREOPT := true
+TARGET_ARCH := x86