games/scummvm: Update to 2.9.0

• Remove the backported patch introduced in 7999da064c4b for compatibility with FreeType2 2.13.3 and newer as it's included in this release and hence no longer required.

• Disable the Unix /dev/sequencer support via OSS for the time being to prevent build errors. ScummVM has recently received OSS synth device support and FreeBSD's implementation of OSS lacks a corresponding IOCTL command SNDCTL_SYNTH_ID for this.

• Take this opportunity to set the FLUIDSYNTH option as default to enable general MIDI device emulation via FluidSynth, which requires little additional dependencies. Support for FluidSynth is provided by default with the official upstream binary packages and has also been enabled as well among other BSDs and distros for some time.

Changelog:

https://downloads.scummvm.org/frs/scummvm/2.9.0/ReleaseNotes.html

MFH: No (feature release)