edk2-firmware: Add missing SPDX headers

Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

meta-oniro-core/recipes-bsp/uefi/edk2-firmware_%.bbappend

+# SPDX-FileCopyrightText: Huawei Inc.
+#
+# SPDX-License-Identifier: MIT
+
 COMPATIBLE_MACHINE:qemuarm-efi   = "qemuarm-efi"
 EDK2_PLATFORM:qemuarm-efi        = "ArmVirtQemu"
 EDK2_PLATFORM_DSC:qemuarm-efi    = "ArmVirtPkg/ArmVirtQemu.dsc"

meta-oniro-staging/dynamic-layers/meta-arm/recipes-bsp/uefi/edk2-firmware/0001-Respect-BUILD_CFLAGS-in-GCC_ALL_CC_FLAGS.patch.license

+SPDX-FileCopyrightText: Huawei Inc.
+
+SPDX-License-Identifier: MIT
\ No newline at end of file