mmc: sdhci: convert reset into a library function

Rather than having platform_reset_enter/platform_reset_exit methods,
turn the core of the reset handling into a library function which
platforms can call at the appropriate moment in their (new) reset
method.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Markus Pargmann <mpa@pengutronix.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 0301f92..7d84cb3 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -285,8 +285,7 @@
 	void (*platform_send_init_74_clocks)(struct sdhci_host *host,
 					     u8 power_mode);
 	unsigned int    (*get_ro)(struct sdhci_host *host);
-	void	(*platform_reset_enter)(struct sdhci_host *host, u8 mask);
-	void	(*platform_reset_exit)(struct sdhci_host *host, u8 mask);
+	void		(*reset)(struct sdhci_host *host, u8 mask);
 	int	(*platform_execute_tuning)(struct sdhci_host *host, u32 opcode);
 	int	(*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs);
 	void	(*hw_reset)(struct sdhci_host *host);
@@ -402,6 +401,7 @@
 }
 
 void sdhci_set_bus_width(struct sdhci_host *host, int width);
+void sdhci_reset(struct sdhci_host *host, u8 mask);
 
 #ifdef CONFIG_PM
 extern int sdhci_suspend_host(struct sdhci_host *host);