cherokee.inc: add DEPENDS to mysql5

error in do_configure.log was:
checking for mysql_config... /usr/bin/mysql_config
checking for MySQL libraries... yes
checking for mysql.h (using mysql_config --cflags)... no
checking if MySQL version is >= 5.0.0... yes
...

ERROR: This autoconf log indicates errors, it looked at host include and/or library paths while determining system capabilities.
Rerun configure task after fixing this. The path was '/home/andreas/tmp/oe-core-eglibc/work/armv7a-angstrom-linux-gnueabi/cherokee-1.2.98-r0.0/cherokee-1.2.98'
ERROR: Function failed: do_qa_configure

Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>