dde_linux: port of WireGuard kernel module

A userland component that ports the Linux WireGuard kernel module (originally
from kernel version 5.14.21) and integrates it via a NIC session (public
network side) and an Uplink session (private network side). The
WireGuard-specific device configuration is done through the component
configuration. The port is done using lx_emul, lx_kit and the virt_linux
targets. The commit adds also 4 corresponding run scripts of which 3 are fully
automated of which 1 is added to the autopilot.

:Warning:

Although in principal functioning, the WireGuard port has not been exposed to a
sufficient amount of real-world testing, so far. Therefore, we strongly
recommend not to use it in any security-critical scenarios! There is no
guarantee that the port meets any of the security goals pursued by the
WireGuard protocol or other WireGuard implementations!

Ref #4397

repos/dde_linux/lib/mk/spec/arm_64/wireguard.mk

@@ -0,0 +1,23 @@
+#
+# For documentation see $(REP_DIR)/lib/mk/wireguard.inc .
+#
+
+PRG_DIR := $(REP_DIR)/src/app/wireguard/spec/arm_64
+GEN_PRG_DIR := $(PRG_DIR)/../..
+
+SRC_C += arch/arm64/kernel/smp.c
+SRC_C += kernel/smp.c
+SRC_C += arch/arm64/kernel/cpufeature.c
+
+vpath arch/arm64/kernel/cpufeature.c $(GEN_PRG_DIR)/lx_emul/shadow
+vpath arch/arm64/kernel/smp.c        $(REP_DIR)/src/lib/lx_emul/shadow
+vpath kernel/smp.c                   $(REP_DIR)/src/lib/lx_emul/shadow
+
+SRC_S += arch/arm64/crypto/poly1305-core.S
+
+arch/arm64/crypto/poly1305-core.S:
+	$(VERBOSE)perl $(LX_SRC_DIR)/arch/arm64/crypto/poly1305-armv8.pl > $@
+
+CC_OPT_arch/arm64/crypto/poly1305-core += -Dpoly1305_init=poly1305_init_arm64
+
+include $(REP_DIR)/lib/mk/wireguard.inc