libhwc2.1: Use std::array for histogram oprVals

The AIDL interface use std::array instead of vector, change the argument
to match AIDL.

Bug: 309897479
Test: adb shell queryStats opr
Change-Id: Ib7e0ee0ee9fa5987d5965ceacbdae8edc4af5f34
Signed-off-by: Leo Chen <[email protected]>
2 files changed