Core Update 172: Ship intel-microcode

Signed-off-by: Peter Müller <peter.mueller@ipfire.org>

diff --git a/config/rootfiles/core/172/filelists/x86_64/intel-microcode b/config/rootfiles/core/172/filelists/x86_64/intel-microcode
new file mode 120000 (symlink)
index 0000000..d5ac074
--- /dev/null
+++ b/config/rootfiles/core/172/filelists/x86_64/intel-microcode
@@ -0,0 +1 @@
+../../../../common/x86_64/intel-microcode
\ No newline at end of file