devel/avr-gcc: Update to 10.2.0

[joerg]

Summary

diff against my current SVN version

[leres]

Yeah, the raw diff doesn't apply cleanly for me either. Looking it I think it is against a different version of Makefile than what is currently in the ports tree. The current Makefile:

USE_PERL5=      build

GNU_CONFIGURE=  yes
CONFIGURE_ARGS= --disable-libssp \

The diff has:

@@ -45,7 +44,8 @@
USE_CXXSTD=    gnu++03

 CONFIGURE_ARGS=        --target=avr --disable-libssp --with-gmp=${LOCALBASE} --
enable-languages="c c++" \
-               --with-isl=${LOCALBASE}
+               --with-isl=${LOCALBASE} \
+               --without-zstd

And I believe the diff should be relative to /usr/ports.