Board specific includes

GEL includes are organized so that it is possible to define board specific information (defines) and functions. The board specific includes must be located in:

	include/asm-m68hc11/arch-<board>
   
or
	include/asm-m68hc12/arch-<board>
   
The board specific includes are searched first when compiling GEL. This means that, in theory, it is possible to override any GEL include (although this is not recommended). The board specific includes should contain the following:

arch/param.h This file is included from <sys/param.h>. You can override all define specified in either <asm-m68hc11/param.h> or <asm-m68hc12.h>.
arch/interrupts.h This is included from <sys/interrupts.h>. You must implement the `set_interrupt_handler' function (as an inline).