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/AcpiTables/Ssdt.asl b/uefi/linaro-edk2/OvmfPkg/AcpiTables/Ssdt.asl
new file mode 100644
index 0000000..67c5fdb
--- /dev/null
+++ b/uefi/linaro-edk2/OvmfPkg/AcpiTables/Ssdt.asl
@@ -0,0 +1,19 @@
+/** @file

+  Placeholder for runtime-generated objects.

+

+  This empty table provides only a header for dynamic copying and extension,

+  and a trigger for QemuInstallAcpiSsdtTable().

+

+  Copyright (C) 2012 Red Hat, Inc.

+

+  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.

+**/

+

+DefinitionBlock ("Ssdt.aml", "SSDT", 1, "REDHAT", "OVMF    ", 1) {

+}