[PATCH 1/3] usb: phy: generic: use forward declarations instead of #includes

[Bjorn Helgaas <bhelgaas@google.com>]

In include/linux/usb/usb_phy_generic.h, use a forward declaration for
struct gpio_desc instead of including linux/gpio/consumer.h.

Of the files that include usb_phy_generic.h, only
drivers/usb/phy/phy-generic.c uses the gpiod_*() interfaces from
linux/gpio/consumer.h, so include consumer.h explicitly there.

This is a little more efficient and ensures that users of the gpiod
interfaces include linux/gpio/consumer.h directly rather than getting it
accidentally via linux/usb/usb_phy_generic.h.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
 drivers/usb/phy/phy-generic.c       |    1 +
 include/linux/usb/usb_phy_generic.h |    3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c
index 5320cb8..2c1349e 100644
--- a/drivers/usb/phy/phy-generic.c
+++ b/drivers/usb/phy/phy-generic.c
@@ -36,6 +36,7 @@
 #include <linux/of.h>
 #include <linux/of_gpio.h>
 #include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/delay.h>
 
 #include "phy-generic.h"
diff --git a/include/linux/usb/usb_phy_generic.h b/include/linux/usb/usb_phy_generic.h
index c13632d5..45c20060 100644
--- a/include/linux/usb/usb_phy_generic.h
+++ b/include/linux/usb/usb_phy_generic.h
@@ -2,7 +2,8 @@
 #define __LINUX_USB_NOP_XCEIV_H
 
 #include <linux/usb/otg.h>
-#include <linux/gpio/consumer.h>
+
+struct gpio_desc;
 
 struct usb_phy_generic_platform_data {
 	enum usb_phy_type type;