add kobj.c and kobj.h
add sysfs support
fix Makefile for sysfs
kobj system
remove rtc alarm function
fix realview-mouse.c
fix led-simple.c
fix led-gpio.c
remove led_color_to_brightness function
fix led.c
add kobj interface for ledtrig.c
fix kobj
fix register device,
add bus to kobj system
add input interface
fix driver's name
fix device's name
add key-gpio driver
rename some struct
fix some data_t xxx