mmc: sdhci-of-arasan: Increase CD stable timeout to 2 seconds

On Xilinx/AMD platforms, the CD stable bit take slightly longer than
one second(about an additional 100ms) to assert after a host
controller reset. Although no functional failure observed with the
existing one second delay but to ensure reliable initialization, increase
the CD stable timeout to 2 seconds.

Fixes: e251709 ("mmc: sdhci-of-arasan: Ensure CD logic stabilization before power-up")
Cc: stable@vger.kernel.org
Signed-off-by: Sai Krishna Potthuri <sai.krishna.potthuri@amd.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Author: Sai Krishna Potthuri

drivers/mmc/host/sdhci-of-arasan.c

@@ -99,7 +99,7 @@
 #define HIWORD_UPDATE(val, mask, shift) \
 		((val) << (shift) | (mask) << ((shift) + 16))
 
-#define CD_STABLE_TIMEOUT_US		1000000
+#define CD_STABLE_TIMEOUT_US		2000000
 #define CD_STABLE_MAX_SLEEP_US		10
 
 /**