WIP: add qemu emulation script for reform kernel

reform2-imx8mq/emulate.sh

+#!/bin/bash
+
+qemu-system-aarch64 \
+  -machine virt \
+  -cpu cortex-a53 \
+  -smp 4 \
+  -kernel ./linux/arch/arm64/boot/Image \
+  -device virtio-gpu-pci,virgl=on \
+  -append "console=ttyAMA0 root=/dev/vda rw" \
+  -m 4096 \
+  -nic user,model=virtio-net-pci \
+  -display gtk,gl=on \
+  -device usb-ehci -device usb-kbd -device usb-tablet -usb \
+  -serial stdio
+
+# optional: rootfs mounted from .img
+#-drive if=none,file=/dev/loop0p1,id=rfs -device virtio-blk-device,drive=rfs \
+