Use precise divide and sqrt builtin

[whitneywhtsang]

#5415 added dependency of -cl-fp32-correctly-rounded-divide-sqrt for precise divide and sqrt.
The disadvantage is it is added at kernel level, so all divide and sqrt are precise, i.e., we cannot have both precise and approximate div in one kernel.
This issue is to track changing to use builtin for precise divide and sqrt when they become available.