dm: block: Rename device number member dev to devnum

This is a device number, and we want to use 'dev' to mean a driver model
device. Rename the member.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c
index 5038a9f..5f2db3b 100644
--- a/drivers/mmc/omap_hsmmc.c
+++ b/drivers/mmc/omap_hsmmc.c
@@ -177,11 +177,11 @@
 
 #if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER)
 	/* PBIAS config needed for MMC1 only */
-	if (mmc->block_dev.dev == 0)
+	if (mmc->block_dev.devnum == 0)
 		omap4_vmmc_pbias_config(mmc);
 #endif
 #if defined(CONFIG_OMAP54XX) && defined(CONFIG_PALMAS_POWER)
-	if (mmc->block_dev.dev == 0)
+	if (mmc->block_dev.devnum == 0)
 		omap5_pbias_config(mmc);
 #endif