aic7xxx: aicasm correct include file

aicasm just puts the value of the "-i" passed include file in the
generated file with quotes around it. This means that there are manual
edits made to aic7xxx_reg_print.c and aic79xx_reg_print.c

now we check to see if the value passed to '-i' starts with a '<', if it
does don't output the quotes.

Signed-off-by: HP van Braam <hp@tmm.cx>
Reviewed by: imp (minor code simplification)
Pull Request: https://github.com/freebsd/freebsd-src/pull/1209