MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs.

arch/mips/Kconfig

arch/mips/Makefile

arch/mips/bcm63xx/Kconfig

arch/mips/bcm63xx/Makefile

arch/mips/bcm63xx/boards/Kconfig

arch/mips/bcm63xx/boards/Makefile

arch/mips/bcm63xx/boards/board_bcm963xx.c

arch/mips/bcm63xx/clk.c

arch/mips/bcm63xx/cpu.c

arch/mips/bcm63xx/cs.c

arch/mips/bcm63xx/dev-dsp.c

arch/mips/bcm63xx/early_printk.c

arch/mips/bcm63xx/gpio.c

arch/mips/bcm63xx/irq.c

arch/mips/bcm63xx/prom.c

arch/mips/bcm63xx/setup.c

arch/mips/bcm63xx/timer.c

arch/mips/configs/bcm63xx_defconfig

arch/mips/include/asm/fixmap.h

arch/mips/include/asm/mach-bcm63xx/bcm63xx_board.h