protobuf: fix musl build

protobuf: fix musl build

Add upstream patch fixing conflict with musl defined major/minor macros.

Fixes:
http://autobuild.buildroot.net/results/fc5/fc5ea266eecb6ecab011ea3542f0bb680fb8fb3b/
http://autobuild.buildroot.net/results/3b3/3b3fe16978f19e65a6c6dc1712d72cb349eed0d5/
http://autobuild.buildroot.net/results/1da/1dac9d5e49342700036c90ed4785fff7398b8966/

Cc: Mario J. Rugiero <mrugiero@gmail.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Mario J. Rugiero <mrugiero@gmail.com>
Tested-by: Mario J. Rugiero <mrugiero@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>