MIF frequency optimization for 60fps video recording use-case

This CL sets the MIF min clock frequency to 1539MHz, which based on
initial ODPM and MIPS measurements shows benefit both in terms of power
consumption and cycles-per-instructions (CPI), reducing the gap with R4
device.

Bug: 238775955
Test: ODPM and CPI tests. Link to test results provided in the bug.
Change-Id: I6fc043c3d0d9f052c02dd04eb47f22661cfade6a