drm_hwcomposer: Fix DrmProperty log build failure
DrmProperty logs the uint64_t property value if it is unrecognized. However, this type can be represented multiple ways:
- unsigned long (%lu)
- unsigned long long (%llu)
This generates build errors when the wrong type is used.
The correct way to log the value with with |PRIu64|.
Signed-off-by: Tim Van Patten timvp@google.com