audio: Provides an API for getting HPEQ gain ranges [3/3]

PD#SWPL-192845

Problem:
1.The HPEQ band gain UI displays that the current value
ranges from -12 dB to 12db
2.If the gain of the signal is greater than 0db, the data
will be abnormal and pop will be generated

Solution:
1.Provides an API for getting HPEQ gain ranges

Verify:
yocto

Change-Id: I88f1361bcfe42883090376e9e845bd9260c03221
Signed-off-by: hui.liu <hui.liu@amlogic.com>
2 files changed
tree: 88fda56d906224dc67170c2c0186d615f945d42c
  1. include/
  2. src/
  3. Makefile