linux-imx

drm/amdgpu: fix spelling mistake "Pramater" -> "Parameter"

There is a spelling mistake in the module description text and
a comment too, fix them. Also line break overly long comment.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>