msm: kgsl: Make getproperty/setproperty return -ENODEV for invalid types

Instead of returning -EINVAL for unknown property types, return -ENODEV
instead so the user space tests can differentiate between a unsupported
type and some other error.

Change-Id: Ic0dedbad1238261ed1166a7f76b612756983f825
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>