Problems with pulse pattern generation when at least two phases have the same duty cycle.

[joewa]

This test case fails:
OK svm30.du = 0.750000000
OK svm30.dw = 0.250000000
OK svm30.dv = 0.250000000
OK svm30.mode = 1.000000000
OK pwm3dma0.enable = 1.000000000

This test case fails:
OK svm30.du = 0.250000000
OK svm30.dv = 0.750000000
OK svm30.dw = 0.750000000
OK svm30.mode = 1.000000000
OK pwm3dma0.enable = 1.000000000

This test case fails:
OK svm30.du = 0.250000000
OK svm30.dv = 0.750000000
OK svm30.dw = 0.250000000
OK svm30.mode = 1.000000000
OK pwm3dma0.enable = 1.000000000

This test case fails:
OK svm30.du = 0.750000000
OK svm30.dv = 0.750000000
OK svm30.dw = 0.250000000
OK svm30.mode = 1.000000000
OK pwm3dma0.enable = 1.000000000

This test case fails:
OK svm30.du = 0.250000000
OK svm30.dv = 0.250000000
OK svm30.dw = 0.750000000
OK svm30.mode = 1.000000000
OK pwm3dma0.enable = 1.000000000

This test case is OK:
OK svm30.du = 0.750000000
OK svm30.dv = 0.250000000
OK svm30.dw = 0.500000000
OK svm30.mode = 1.000000000
OK pwm3dma0.enable = 1.000000000