msm: kgsl: Remove sync debug name generation from hot path

Generating a sync debug name with snprintf in a hot path results in
excessive CPU time wasted on unneeded debug info. Remove the name
generation entirely to cut down CPU waste in the GPU's rendering hot
path.

Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com>
Signed-off-by: Zile995 <stefan.zivkovic995@gmail.com>