meson: Upgdate 0.50.1 -> 0.52.0

Our bitbake tree already has this version, bump our script version to
match.

The way scan-build is detected has changed. We no longer need to pass
our custom version of scan-build since it will now be autodetected at
the highest version correctly.

Change-Id: I248875292a385ae05d27f50e2de2e14c0e848aff
Signed-off-by: William A. Kennington III <wak@google.com>
2 files changed