Makefile: Change default make target to "parisc"

"parisc" is the default target when using this SeaBIOS-hppa git
repository. Change it accordingly, which then allows us to just run
"make" instead of "make parisc".

Requested-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Helge Deller <deller@gmx.de>
1 file changed