package/mono: bump to version 5.12.0.226

package/mono: bump to version 5.12.0.226

This patch bumps mono to version 5.12.0.226 and it's monolite dependency
to version 1051200002, doing so it removes also a couple of upstreamed
patches.
This new mono version requires also a different option for
managing aot, so this patch refactors also the configure options.

Signed-off-by: Angelo Compagnucci <angelo@amarulasolutions.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>