[PATCH] docs: add requirements file

From: Ondrej Lichtner <olichtne(a)redhat.com&gt;

I need to point readthedocs to _some_ requirements file but the default
one tries to install libvirt and ethtool which doesn't work...

Signed-off-by: Ondrej Lichtner <olichtne(a)redhat.com&gt;
---
 docs/requirements.txt | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 docs/requirements.txt

diff --git a/docs/requirements.txt b/docs/requirements.txt
new file mode 100644
index 0000000..6966869
--- /dev/null
+++ b/docs/requirements.txt
@@ -0,0 +1 @@
+sphinx
-- 
2.26.2