Husky sampling clock phase is not consistent.

[jpcrypt]

The relative phase between the target clock and the ADC sampling clock phase is not always consistent when scope.clock.adc_mul is changed, or when the frequency of scope.clock.clkgen_src is changed.

Running scope.clock.pll.recal() and re-setting scope.clock.clkgen_src appears to resolve the problem but more testing is needed.