MFC r236712:

MFC r236712:
To make CAM debugging easier, compile in some debug flags (CAM_DEBUG_INFO,
CAM_DEBUG_CDB, CAM_DEBUG_PERIPH and CAM_DEBUG_PROBE) by default.
List of these flags can be modified with CAM_DEBUG_COMPILE kernel option.
CAMDEBUG kernel option still enables all possible debug, if not overriden.

Additional 50KB of kernel size is a good price for the ability to debug
problems without rebuilding the kernel. In case where size is important,
debugging can be compiled out by setting CAM_DEBUG_COMPILE option to 0.

git-svn-id: svn://svn.freebsd.org/base/stable/8@237318 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f