AAC decoder: test boost/attenuation w/ DRC effect in USAC decoding

Add new tests that combine boost and attenuation settings on
top of the DRC effect types for USAC decoding

Bug: 148385721
Test: atest DecoderTestXheAac
Change-Id: I8d9ca10426a3eca0b1d8d63ab9274a19c4d34d2e
1 file changed