Read cs_outstanding_ctl_pdus before incrementing it for NEXUS RESET task.

This removes extra log noise on idle connection termination.

MFC after:	1 week
The arm PJ4B cpu is armv7 architecture, not v6.

If this feels like deja vu... the last time this was fixed in this file
only ARM_MMU_V6 was fixed, this time it's ARM_ARCH_V6 (and this time I
searched for other occurrances of pj4b in here).