qemu: process: Move clearing of QEMU_CAPS_CHARDEV_FD_PASS to qemuProcessPrepareQEMUCaps
qemu: process: Move clearing of QEMU_CAPS_CHARDEV_FD_PASS to qemuProcessPrepareQEMUCaps

Move the post-processing of the QEMU_CAPS_CHARDEV_FD_PASS flag to the
new function.

The clearing of the capability is based on the presence of
VIR_QEMU_PROCESS_START_STANDALONE so we must also pass in the process
start flags.

Signed-off-by: Peter Krempa <2cf5c04c61aa466e4a47bfedc747d17279c72ffc@redhat.com>
Reviewed-by: Cole Robinson <7cd45ff6ad1fb7cf556a02797d774247851499f8@redhat.com>

libvirt/libvirt,zippy2/libvirt,jfehlig/libvirt,nertpinx/libvirt,jardasgit/libvirt,crobinso/libvirt,nertpinx/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,zippy2/libvirt,nertpinx/libvirt,jardasgit/libvirt,nertpinx/libvirt,olafhering/libvirt,fabianfreyer/libvirt,libvirt/libvirt,zippy2/libvirt,crobinso/libvirt,crobinso/libvirt,jfehlig/libvirt,olafhering/libvirt,jardasgit/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,libvirt/libvirt,fabianfreyer/libvirt,libvirt/libvirt,jardasgit/libvirt,crobinso/libvirt,olafhering/libvirt,olafhering/libvirt,zippy2/libvirt