drm/tests: Fix swapped drm_framebuffer tests parameter names

Swap tests parameters names so they actually reflect what is being tested.

Signed-off-by: Carlos Eduardo Gallo Filho <gcarlos@disroot.org>
Reviewed-by: André Almeida <andrealmeid@igalia.com>
Reviewed-by: Maíra Canal <mairacanal@riseup.net>
Signed-off-by: Maíra Canal <mairacanal@riseup.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20230624212905.21338-1-gcarlos@disroot.org