linux-yocto: Enable ashmem

OpenHarmony requires Android Shared Memory kernel support.

Signed-off-by: Robert Drab <robert.drab@huawei.com>

recipes-kernel/linux-yocto/linux-yocto/ashmem.cfg

+# SPDX-FileCopyrightText: Huawei Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_STAGING=y
+CONFIG_ANDROID=y
+CONFIG_ASHMEM=y

recipes-kernel/linux-yocto/linux-yocto_%.bbappend

+# SPDX-FileCopyrightText: Huawei Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+FILESEXTRAPATHS:prepend := "${THISDIR}/linux-yocto:"
+
+SRC_URI:append:oniro-openharmony-linux = " file://ashmem.cfg"