[third_party/sbc] Fix duplicate symbol linker issue

dequant_long_* symbols were not declared extern when used as such and
our toolchain treats as new declaration due to use of -fno-common

Change-Id: I2aa3e059b0f007026953a67db1971c4c669d4f00
1 file changed
tree: a0aa1d8e9716adace35949b7f965ccf3ed18e851
  1. NOTICE
  2. embdrv/