[netX51/52] - DPM Timings (DPM_IF_CFG and address comparator in DPM_ADDR_CFG) are not setup correctly

The netX51 DPM module has been changed from netX10 and the DPM settings are latched in the hardware unit, before they are activated. The activation is triggered by a write to the DPM_CFG0x0 register, but the configuration is not terminated by a write to this register.

This results in DPM settings not getting active (e.g. multiplexed mode pins are not set up)

This only occurs if the register DPM_IF_CFG or the address comparator bits in register DPM_ADDR_CFG are changed to a non-standard value.