As spotted by Thomas Petazzoni during review of
https://patchwork.ozlabs.org/project/buildroot/patch/20200713215943.2240412-1-fontaine.fabrice@gmail.com,
oracle-mysql uses its bundled version of zlib if it is not found on the
system
So explictly disable zlib if needed and add a patch fixing build
failures without it
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 6fed83a030)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>