mariadb: not use the bundled libpcre2
>From mariadb 10.5.1, it starts to use pcre2 [1] which is the bundled
libpre2 by default. If using the bundled one, it will fetch, unpack
and build the libpcre2 during mariadb do_compile phase as mariadb uses
the bundled libpcre2 as an external project, more details in [2].
To avoid downloading the libpcre2 source from website during mariadb
do_compile phase, switch to use the system libpcre2.
[1] https://mariadb.com/kb/en/pcre/
[2] https://github.com/MariaDB/server/blob/10.5/cmake/pcre.cmake
Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>