package/erlang-p1-cache-tab: add .hash file

Similar to jquery-keyboard, it seems the erlang-p1-cache-tab tarball on the
autobuilder is corrupt.  Fix it by adding a .hash file so it falls back to our
s.b.o mirror.

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/erlang-p1-cache-tab/erlang-p1-cache-tab.hash

@@ -0,0 +1,2 @@
+# Locally calculated
+sha256 752b649f695e9f2777efd6b2d8dfdcc1f435104b4e363f5f0454b99fd009015c erlang-p1-cache-tab-1.0.1.tar.gz