hw: skeleton for building x86_64_muen

The hw_x86_64_muen platform is a x86/64 base-hw kernel which runs as
isolated subject (guest) on the Muen Separation Kernel (SK) [1].

The platform is implemented as an extension to hw_x86_64 replacing the
PIC and timer drivers with paravirtualized variants. The skeleton
contains a dummy PIC and timer implementation for now.

[1] - http://muen.sk

tool/builddir/etc/build.conf.hw_x86_64_muen

@@ -0,0 +1,9 @@
+REPOSITORIES += $(GENODE_DIR)/repos/base-hw
+
+##
+## Kernel-specific run tool configuration
+##
+
+RUN_OPT = --include boot_dir/hw \
+          --include power_on/qemu --include log/qemu --include image/iso
+