Cleanup patches for mali-dp driver

[Liviu Dudau]

Hi,

A couple of patches to fix issues that I have discovered during the development of
more Mali DP features :)

I would like to take these patches through drm-misc and don't go through the mali-dp tree
as I will be going on holiday for a month. If anyone has patches for Mali DP driver
(or HDLCD to an extent) please Cc Brian Starkey or use the formal Mali DP mailing list.

Many thanks,
Liviu