kernel: firmware: cs_dsp: Fix OOB memory read access in KUnit test (ctl cache)

In the Linux kernel, the following vulnerability has been resolved: firmware: csdsp: Fix OOB memory read access in KUnit test ctl cache KASAN reported out of bounds access - csdspctlcacheinitmultipleoffsets. The code uses mockcoefftemplate.lengthbytes 4 bytes for register value allocations. But...