DRC: math: Rename variables and functions in accordance SOF math regu… #348

Job	Run time
LP64-WIP	3m 21s
build-windows (imx8 imx8x imx8m)	6m 19s
build-linux (mnfst, imx8 imx8x imx8m)	4m 14s
build-windows (mtl)	5m 21s
build-linux (mnfst, mtl)	4m 23s
manifest-check	51s
build-windows (tgl tgl-h)	7m 16s
build-linux (mnfst, lnl)	3m 59s
build-windows (-d, mtl)	5m 27s
build-linux (mnfst, tgl tgl-h)	4m 55s
build-linux (zmain, imx8 imx8x imx8m)	4m 20s
build-linux (zmain, mtl)	5m 5s
build-linux (zmain, lnl)	4m 6s
build-linux (zmain, tgl tgl-h)	4m 59s
build-linux (-d, mnfst, mtl)	5m 9s
compare-linux-win	28s
	1h 10m 13s

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