update media_codecs_performance.xml

Observed different performance on signed builds vs. userdebug, so
manually increased reported range to better reflect the range of
expected codec performance.

Bug: 32742622
Change-Id: Iabfb6f5c705e1436297dbf87b45da9fdfb60df6b
(cherry picked from commit ea43193b2b6a2db4af4ccb2f2333d3dc83332dcd)
1 file changed