gpu: nvgpu: fix invalid "reset initiated" prints

gpu: nvgpu: fix invalid "reset initiated" prints

Improve the error path and return values from function
gk20a_fifo_handle_sched_error()
- return true, when we trigger the recovery in this function
- otherwise, return false

No need to reset the scheduler error register in this function,
since we anyway clear the interrupt in fifo_error_isr()

Also, fix the typo
"reset initated" -> "reset initiated"

Bug 200089043

Change-Id: Ibfc2fd2133982a268699d08682bcd6f044a3196a
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/722711
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>