Fix - arm_math.h: Use the float suffix in arm_clarke_f32
Fix - arm_math.h: Use the float suffix in arm_clarke_f32

The float suffix replaces the need for a float cast in arm_clarke_f32.
This change is necessary to avoid large amount of warnings by arm_math.h when the -Wunsuffixed-float-constants flag is used. And using this compile flag is very reasonable on a processor with 32bit FPU.
ARM-software/CMSIS_5,JonatanAntoni/CMSIS_5,JonatanAntoni/CMSIS_5,JonatanAntoni/CMSIS_5,JonatanAntoni/CMSIS_5,ARM-software/CMSIS_5,ARM-software/CMSIS_5,ARM-software/CMSIS_5,JonatanAntoni/CMSIS_5,JonatanAntoni/CMSIS_5,ARM-software/CMSIS_5,ARM-software/CMSIS_5