audio: update speaker boost peak current limit

 - Set the "boost peak current limit" as 2.50A in default for
   both top & bot cirrus amps under "speaker" path(stereo
   speaker playback usecase).

Bug: 207431993
Test: manual test (b/207431993#comment7)

Signed-off-by: Jasmine Cha <chajasmine@google.com>
Change-Id: Ie371225338a7470bf8d9bced46f68d16192758c3