增加支持hp & spk 自动切换

hc

2024-03-22 619f0f87159c5dbd2755b1b0a0eb35784be84e7a

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#
# Broadcom BCM47XX boards
#
cflags-$(CONFIG_BCM47XX)    +=                    \
        -I$(srctree)/arch/mips/include/asm/mach-bcm47xx
load-$(CONFIG_BCM47XX)        := 0xffffffff80001000
zload-$(CONFIG_BCM47XX)        += 0xffffffff80400000