lm32 and m68k isr entry

[Gedare Bloom]

Hello,

Is there any good reason that the lm32 and m68k ports define their own
versions of rtems_isr_entry?

We have:
typedef void rtems_isr;
typedef rtems_isr ( *rtems_isr_entry )(
                 rtems_vector_number
             );


For lm32:
typedef void lm32_isr;
typedef lm32_isr ( *lm32_isr_entry )( void );

For m68k:
typedef void m68k_isr;
typedef void ( *m68k_isr_entry )( void );