修复hp / spk自动切换

hc

2023-03-15 f8c23d1415aad662de5acfa33671b5d14d2c1300

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CONFIG_ARM=y
CONFIG_TARGET_IMX31_PHYCORE=y
CONFIG_BOOTDELAY=3
CONFIG_SYS_PROMPT="uboot> "
CONFIG_CMD_EEPROM=y
CONFIG_CMD_I2C=y
# CONFIG_CMD_SETEXPR is not set
CONFIG_CMD_PING=y
CONFIG_ENV_IS_IN_EEPROM=y
# CONFIG_MMC is not set
CONFIG_MTD_NOR_FLASH=y