* centec x86 update for buster * optimize dal code
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
* update centec e582 platform drivers and libsai * delete minigraph.xml * remove minigraph * update psuutil.py comments * update device qos config file and clean minigraph