speexdsp: upgrade 1.2.0 -> 1.2.1

speexdsp: upgrade 1.2.0 -> 1.2.1

License-Update:
  Add "Organisation (CSIRO)" to Copyright 2005-2008

Changelog:
=========
    CI: add gitlab CI integration
    fixed-point: Remove unused MULT16_32_Q1[1-4] macros and inlines
    fixed-point: don't truncate 32-bit arg to MULT16_32_Q15
    fixed-point resample: remove 1-bit shift right before interpolation
    fixed-point: introduce MULT16_32_32 to handle unexpected types in MULT16_32_Q15
    Fix incorrect macro names in arch.h
    Remove unused stack_alloc.h
    autotools: do not use deprecated macros

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>