Build break for port mac68k

[Paul Goyette <paul%whooppee.com@localhost>]

With sources updated just a short while ago, I'm getting the following 
error in 'build.sh release' during build of INSTALL kernel:


cc1: warnings being treated as errors
/build/netbsd-local/src/sys/arch/mac68k/dev/mac68k5380.c: In function 
'do_ncr5380_drq_intr':
/build/netbsd-local/src/sys/arch/mac68k/dev/mac68k5380.c:412:0: error: "R1" 
redefined
./m68k/reg.h:96:0: note: this is the location of the previous definition




-------------------------------------------------------------------------
| Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:       |
| Customer Service | FA29 0E3B 35AF E8AE 6651 | paul at whooppee.com    |
| Network Engineer | 0786 F758 55DE 53BA 7731 | pgoyette at juniper.net |
| Kernel Developer |                          | pgoyette at netbsd.org  |
-------------------------------------------------------------------------