update configurations
move UART device definition to board header
avoid duplicated NVIC entries for STM32F4

Fixes #15
update bitmap location in linker script

Fixes #10
Merge pull request #16 from arcbbb/fix-bitmap

update bitmap location in linker script
add arcbbb in contributor list
remove cpsid/cpsie from irq_{save, return}
add initialization to handler priority
Merge branch 'test-priority' of github.com:arcbbb/f9-kernel into arcbbb-test-priority
test kprobes feature
fix register naming rule to conform ARM manual
remove kprobes test function outside kernel tree
add build-time option: CONFIG_KPROBES
replace fpb-related symbols with hw_breakpoint
revise description of kprobe-arch.c
revise kprobe description in init.c
trivial fix: remove trailing space
trivial fix: conform to width 80
rename hw_breakpoint.[ch] to hw_debug.[ch]
rename hw_breakpoint_init to hw_debug_init