MLK-14445-8 mx7ulp_evk: Add dynamical MMC device detection
Add board_late_mmc_env_init to support MMC device detection for environment
variables.
Signed-off-by: Ye Li <ye.li@nxp.com>
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6c2fe5b60692e7d0e86383c44792e5f2938bfa14)
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74f5fffe9aee3e1434b63b95e33e7ecc7e5a2b08)
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74b505dd70fc5ba5bb00ec0359ec6f79be757388)
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b3f5ed546092f557e0a68c78e181990e0a637af8)
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1ae79a71818aec55613456b408e3e1fa4d0e7be3)