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/MdePkg/Library/BaseLib/X86WriteIdtr.c b/uefi/linaro-edk2/MdePkg/Library/BaseLib/X86WriteIdtr.c
new file mode 100644
index 0000000..d187bc2
--- /dev/null
+++ b/uefi/linaro-edk2/MdePkg/Library/BaseLib/X86WriteIdtr.c
@@ -0,0 +1,39 @@
+/** @file

+  IA-32/x64 AsmWriteIdtr()

+

+  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>

+  This program and the accompanying materials

+  are licensed and made available under the terms and conditions of the BSD License

+  which 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.

+

+**/

+

+

+

+

+#include "BaseLibInternals.h"

+

+/**

+  Writes the current Interrupt Descriptor Table Register(IDTR) descriptor.

+

+  Writes the current IDTR descriptor and returns it in Idtr. This function is

+  only available on IA-32 and x64.

+

+  If Idtr is NULL, then ASSERT().

+

+  @param  Idtr  The pointer to a IDTR descriptor.

+

+**/

+VOID

+EFIAPI

+AsmWriteIdtr (

+  IN      CONST IA32_DESCRIPTOR     *Idtr

+  )

+{

+  ASSERT (Idtr != NULL);

+  InternalX86WriteIdtr (Idtr);

+}