Makefile: Allow for subdirectories in Sphinx manual dependencies

Currently we put 'docs/foo/*.rst' in the Make list of dependencies
for the Sphinx 'foo' manual, which means all the files must be
in the top level of that manual's directory. We'd like to be
able to have subdirectories inside some of the manuals, so add
'docs/foo/*/*.rst' to the dependencies too.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200309215818.2021-2-peter.maydell@linaro.org
1 file changed