docs: remove uefi-tools in hikey and hikey960

Since uefi-tools isn't used any more in hikey and hikey960, update the
documents.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Change-Id: I0843d27610e241d442e58b6cd71967998730a35d
diff --git a/docs/plat/hikey960.rst b/docs/plat/hikey960.rst
index 3d42a77..982c2c8 100644
--- a/docs/plat/hikey960.rst
+++ b/docs/plat/hikey960.rst
@@ -26,9 +26,6 @@
 -  l-loader:
    `link <https://github.com/96boards-hikey/l-loader/tree/testing/hikey960_v1.2>`__
 
--  uefi-tools:
-   `link <https://git.linaro.org/uefi/uefi-tools.git>`__
-
 Build Procedure
 ~~~~~~~~~~~~~~~
 
@@ -42,7 +39,6 @@
        git clone https://github.com/96boards-hikey/edk2 -b testing/hikey960_v2.5
        git clone https://github.com/96boards-hikey/OpenPlatformPkg -b testing/hikey960_v1.3.4
        git clone https://github.com/96boards-hikey/l-loader -b testing/hikey960_v1.2
-       git clone https://git.linaro.org/uefi/uefi-tools
 
 -  Create the symbol link to OpenPlatformPkg in edk2.
 
@@ -53,13 +49,11 @@
 
 -  Prepare AARCH64 toolchain.
 
--  If your hikey960 hardware is v1, update *uefi-tools/platform.config* first. *(optional)*
-   **Uncomment the below sentence. Otherwise, UEFI can't output messages on serial
-   console on hikey960 v1.**
+-  If your hikey960 hardware is v1, update *OpenPlatformPkg/Platforms/Hisilicon/HiKey960/HiKey960.dsc* first. *(optional)*
 
    .. code:: shell
 
-       BUILDFLAGS=-DSERIAL_BASE=0xFDF05000
+       DEFINE SERIAL_BASE=0xFDF05000
 
    If your hikey960 hardware is v2 or newer, nothing to do.
 
@@ -67,14 +61,8 @@
 
    .. code:: shell
 
-       BUILD_OPTION=DEBUG
-       export AARCH64_TOOLCHAIN=GCC5
-       export UEFI_TOOLS_DIR=${BUILD_PATH}/uefi-tools
-       export EDK2_DIR=${BUILD_PATH}/edk2
-       EDK2_OUTPUT_DIR=${EDK2_DIR}/Build/HiKey960/${BUILD_OPTION}_${AARCH64_TOOLCHAIN}
-       cd ${EDK2_DIR}
-       # Build UEFI & Trusted Firmware-A
-       ${UEFI_TOOLS_DIR}/uefi-build.sh -b ${BUILD_OPTION} -a ../arm-trusted-firmware -s ../optee_os hikey960
+       cd {BUILD_PATH}/arm-trusted-firmware
+       sh ../l-loader/build_uefi.sh hikey960
 
 -  Generate l-loader.bin and partition table.
    *Make sure that you're using the sgdisk in the l-loader directory.*