hostapd: reorganize config selection hierarchy for WPA3

hostapd: reorganize config selection hierarchy for WPA3

The current selection of DRIVER_MAKEOPTS and TARGET_LDFLAGS is
exceptionally hard to read. This tries to make things a little
easier by inverting the hierarchy of the conditions, so SSL_VARIANT
is checked first and LOCAL_VARIANT is checked second.

This exploits the fact that some of the previous conditions were
unnecessary, e.g. there is no hostapd-mesh*, so we don't need
to exclude this combination.

It also should make it a little easier to see which options are
actually switched by SSL_VARIANT and which by LOCAL_VARIANT.

The patch is supposed to be cosmetic. However, the improvement
for readers and the maintained consistency with master qualify
this for backporting.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
(cherry picked from commit c4dd7fc23bfcf3b3f1a838668bb070edc9db5d4b)