AP_InertialSensor: fixed Q calculation for notch filters #44382

Job	Run time
build (stm32f7, chibios, 10)	6m 2s
build (stm32h7, chibios, 10)	5m 34s
build (fmuv2-plane, chibios, 10)	4m 0s
build (periph-build, chibios, 10)	7m 1s
build (iofirmware, chibios, 10)	3m 30s
build (CubeOrange-bootloader, chibios, 10)	3m 4s
build (fmuv3-bootloader, chibios, 10)	3m 8s
build (revo-bootloader, chibios, 10)	3m 9s
build (stm32h7-debug, chibios, 10)	4m 22s
build (fmuv3, chibios, 10)	7m 21s
build (revo-mini, chibios, 10)	6m 32s
build (MatekF405-Wing, chibios, 10)	6m 38s
build (CubeOrange-ODID, chibios, 10)	4m 47s
build (CubeRedPrimary-bootloader, chibios, 10)	2m 57s
build (configure-all, chibios, 10)	11m 49s
build (build-options-defaults-test, chibios, 10)	8m 11s
build (signing, chibios, 10)	4m 51s
build (CubeOrange-PPP, chibios, 10)	4m 30s
build (CubeOrange-SOHW, chibios, 10)	4m 12s
build (Pixhawk6X-PPPGW, chibios, 10)	3m 29s
	1h 45m 7s

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