DRC: math: Rename variables and functions in accordance SOF math regu… #353

Job	Run time
build-linux (mnfst, imx8 imx8x imx8m)	4m 13s
LP64-WIP	3m 25s
build-linux (mnfst, mtl)	3m 59s
build-windows (imx8 imx8x imx8m)	6m 31s
build-linux (mnfst, lnl)	3m 57s
build-windows (mtl)	5m 43s
build-linux (mnfst, tgl tgl-h)	5m 11s
build-windows (tgl tgl-h)	6m 36s
build-linux (zmain, imx8 imx8x imx8m)	4m 18s
manifest-check	57s
build-windows (-d, mtl)	5m 48s
build-linux (zmain, mtl)	3m 56s
build-linux (zmain, lnl)	4m 4s
build-linux (zmain, tgl tgl-h)	4m 43s
build-linux (-d, mnfst, mtl)	4m 7s
compare-linux-win	1m 17s
	1h 8m 45s

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