msm: mdss: Added compat utils support for cursor ioctl

For programming the hwcursor through the cursor ioctl in msm8994 needs
the compat utils support to make the data compatible

Change-Id: If4c05e103f90f04a6ac7475b4d3bc584290934ac
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>