hikey: Add UEFI sources for reference

UEFI needs to be built outside Android build system.
Please follow the instructions in README.

The sources correspond to:
https://github.com/96boards/edk2/commit/14eae0c12e71fd33c4c0fc51e4475e8db02566cf
https://github.com/96boards/arm-trusted-firmware/commit/e9b4909dcd75fc4ae7041cfb83d28ab9adb7afdf
https://github.com/96boards/l-loader/commit/6b784ad5c4ab00e2b1c6f53cd5f74054e5d00a78
https://git.linaro.org/uefi/uefi-tools.git/commit/abe618f8ab72034fff1ce46c9c006a2c6bd40a7e

Change-Id: Ieeefdb63e673e0c8e64e0a1f02c7bddc63b2c7fb
Signed-off-by: Vishal Bhoj <vishal.bhoj@linaro.org>
diff --git a/uefi/linaro-edk2/OvmfPkg/Include/Guid/XenInfo.h b/uefi/linaro-edk2/OvmfPkg/Include/Guid/XenInfo.h
new file mode 100644
index 0000000..d512b0b
--- /dev/null
+++ b/uefi/linaro-edk2/OvmfPkg/Include/Guid/XenInfo.h
@@ -0,0 +1,42 @@
+/** @file

+  XenInfo HOB passed by PEI into DXE.

+

+Copyright (c) 2011, Andrei Warkentin <andreiw@motorola.com>

+This program and the accompanying materials are licensed and made available under

+the terms and conditions of the BSD License that accompanies this distribution.

+The full text of the license may be found at

+http://opensource.org/licenses/bsd-license.php.

+

+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

+

+**/

+

+#ifndef __XEN_INFO_H__

+#define __XEN_INFO_H__

+

+#define EFI_XEN_INFO_GUID \

+    { 0xd3b46f3b, 0xd441, 0x1244, {0x9a, 0x12, 0x0, 0x12, 0x27, 0x3f, 0xc1, 0x4d } }

+

+typedef struct {

+  ///

+  /// Beginning of the hypercall page.

+  ///

+  VOID *HyperPages;

+  ///

+  /// Location of the hvm_info page.

+  ///

+  VOID *HvmInfo;

+  ///

+  /// Hypervisor major version.

+  ///

+  UINT16 VersionMajor;

+  ///

+  /// Hypervisor minor version.

+  ///

+  UINT16 VersionMinor;

+} EFI_XEN_INFO;

+

+extern EFI_GUID gEfiXenInfoGuid;

+

+#endif