K 10
svn:author
V 8
jhibbits
K 8
svn:date
V 27
2014-11-29T20:54:33.145181Z
K 7
svn:log
V 458
Add support for dtrace:fbt on modules for PowerPC

Summary:
Revert the initial FBT-with-KDB changes for trap_subr*.S, and instead use the
db_trap filter function to handle dtrace trap filtering.  With this, the MMU is
enabled by the support code, simplifying the codepath altogether.

Test Plan: Tested on my G4 PowerBook

Reviewers: #powerpc, nwhitehorn

Reviewed By: nwhitehorn

Differential Revision: https://reviews.freebsd.org/D1207

MFC after:	3 weeks

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