tools headers: Add symlink to linux/pci_ids.h

Add a symlink to include/linux/pci_ids.h to tools/include/. This will be
used by VFIO selftests in subsequent commits to match device and vendor
IDs.

Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://lore.kernel.org/r/20250822212518.4156428-18-dmatlack@google.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

diff --git a/tools/include/linux/pci_ids.h b/tools/include/linux/pci_ids.h
new file mode 120000 (symlink)
index 0000000..1c9e88f
--- /dev/null
+++ b/tools/include/linux/pci_ids.h
@@ -0,0 +1 @@
+../../../include/linux/pci_ids.h
\ No newline at end of file