1. undefine led_classdev_register as it is defined in leds.h
2. header file location change
a. linux/i2c/pmbus.h -> linux/pmbus.h
b. linux/i2c-mux-gpio.h -> linux/platform_data/i2c-mux-gpio.h
c. linux/i2c/pca954x.h -> linux/platform_data/pca954x.h
* Remove exsiting sonic-platform-modules-accton and apply submodule adding on this folder.
* Remove redundant commnet
* Remove folder platform/broadcom/sonic-platform-modules-accton.
* Add this dir for submodule.