regulator: pbias: Add PBIAS regulator for proper voltage switching on MMC1

In the TI SOCs a PBIAS cell exists to provide a bias voltage to the MMC1
IO cells. Without this bias voltage these I/O cells can not function
properly. The PBIAS cell is controlled by software.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
index 4429292..fa24c52 100644
--- a/drivers/mmc/Kconfig
+++ b/drivers/mmc/Kconfig
@@ -136,6 +136,7 @@
 config MMC_OMAP_HS
 	bool "TI OMAP High Speed Multimedia Card Interface support"
 	select DM_REGULATOR_PBIAS if DM_MMC && DM_REGULATOR
+	select DM_REGULATOR_PBIAS if DM_MMC && DM_REGULATOR
 	help
 	  This selects the TI OMAP High Speed Multimedia card Interface.
 	  If you have an omap2plus board with a Multimedia Card slot,