Include missing header for `isrFunc`
Include missing header for `isrFunc`

Otherwise HardwareSerial.h can't be included in a file that doesn't include <wiring.h>

wiring.h already includes the other headers, so they are no longer needed
chipKIT32/chipkit-core,pontech/chipKIT-core,majenkotech/chipKIT-core,pontech/chipKIT-core,adamwolf/chipKIT-core,adamwolf/chipKIT-core,chipKIT32/chipkit-core,EmbeddedMan/chipKIT-core,EmbeddedMan/chipKIT-core,ricklon/chipKIT-core,pontech/chipKIT-core,ricklon/chipKIT-core,majenkotech/chipKIT-core,adamwolf/chipKIT-core,adamwolf/chipKIT-core,majenkotech/chipKIT-core,pontech/chipKIT-core,adamwolf/chipKIT-core,pontech/chipKIT-core,majenkotech/chipKIT-core,ricklon/chipKIT-core,EmbeddedMan/chipKIT-core,chipKIT32/chipkit-core,majenkotech/chipKIT-core,EmbeddedMan/chipKIT-core,pontech/chipKIT-core,chipKIT32/chipkit-core,ricklon/chipKIT-core,ricklon/chipKIT-core,pontech/chipKIT-core,adamwolf/chipKIT-core,EmbeddedMan/chipKIT-core,majenkotech/chipKIT-core,chipKIT32/chipkit-core,ricklon/chipKIT-core,adamwolf/chipKIT-core,EmbeddedMan/chipKIT-core,majenkotech/chipKIT-core,EmbeddedMan/chipKIT-core