ecore-drm: Make ecore_drm_output_rotation_set fail properly

ecore-drm: Make ecore_drm_output_rotation_set fail properly

When trying to set a rotation on a given output, we would previously
always be returning EINA_TRUE. We should be returning EINA_FALSE when
the rotation_set fails.

@fix

Summary: ecore_drm_output_rotation_set should be returning EINA_FALSE when the output doesn't have a plane of requested type.

Test Plan:
1. call ecore_drm_output_rotation_set() with ECORE_DRM_PLANE_TYPE_CURSOR
2. If output doesn't have a plane of ECORE_DRM_PLANE_TYPE_CURSOR, the for statement does nothing. But return value is TRUE;

Reviewers: raster, stefan_schmidt, gwanglim, devilhorns, zmike

Subscribers: input.hacker, cedric, JHyun, ManMower, jpeg

Differential Revision: https://phab.enlightenment.org/D3678