mmc: sdhci-esdhc-imx: add flag ESDHC_FLAG_USDHC
mmc: sdhci-esdhc-imx: add flag ESDHC_FLAG_USDHC

Add flag ESDHC_FLAG_USDHC to tell that the ESDHC is actually an USDHC
block, and replace the is_imx6q_usdhc() occurrences with inline function
esdhc_is_usdhc() which checks the flag.

Signed-off-by: Shawn Guo <912cf7eb7d8018e2943586ae6657d21fd4e38239@linaro.org>
Acked-by: Dong Aisheng <f8b72116bf80189a70941b53a10a3d3b2650c711@freescale.com>
Signed-off-by: Chris Ball <6ca7faee6ca9a094b1ee341f11b840a5608a8746@laptop.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs