uboot-imx

mmc: sdhci: drop CONFIG_ from CONFIG_SDHCI_CMD_MAX_TIMEOUT

No need for per-SoC adjustment for this parameter.  It should be
determined by the slowest hardware.  Currently, no board overrides
this CONFIG, so 3.2 sec is large enough.  (If not, we can make it
even larger.)

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>