linux-yocto/5.2: config tweaks and kallsyms fix

linux-yocto/5.2: config tweaks and kallsyms fix

Integrating some 5.2 configuration changes (for new board supprt), and
the following fix:

 kallsyms: Don't let kallsyms_lookup_size_offset() fail on retrieving the first symbol

With this fix, we no longer see:

   [    0.032677] kprobes: failed to populate blacklist: -22

during boot on arm/mips

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>