edb: use ISR macro from libmsp

codepoint pin order is fixed on EDBv1.1 board

interrupt: support interrupting target after it booted

pins: add explicit pin section for sprite board

edb.h: don't include printf.h unconditionally

debug mode: remove invalid TODO about requester

libedb's side patch for entering debug mode on boot

option to use some pins for tracing events for debugging

signal: clear the flag when masking, just in case

pins: add assignments for MSP430FR6989 launchpad board

bugfix: need to use BIT() around bin numbers

sig isr: clear int flags from irrelevant pins

printf: use naming convention instead of overriding

bld: override when setting CFLAGS

bld: target: gcc: override DEPS setting