sysutils/cciss_vol_status: update to 1.12a

Changes since 1.12

• Correct some logic, use bitwise instead of logical ands

While here, fix port Makefile bug checking for SRC_BASE
without including bsd.port.pre.mk, so SRC_BASE was always empty
and the check works due to /sys symlink pointing to real source tree;
the check failed without such /sys symlink.

Also, remove the patch upstreamed.

PR: 259462
Approved by: Frank Wall (maintainer, initial patch)