Fix condition for calling set_pixmap_bo in drmmode_xf86crtc_resize
This matches CreateScreenResources_KMS.
Fixes crash when resizing the screen (e.g. using xrandr) with depth < 24.
Bugzilla: https://bugs.freedesktop.org/104914
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This matches CreateScreenResources_KMS.
Fixes crash when resizing the screen (e.g. using xrandr) with depth < 24.
Bugzilla: https://bugs.freedesktop.org/104914