USB: EHCI: miscellaneous cleanups for the library conversion

This patch (as1630) cleans up a few minor items resulting from the
split-up of the ehci-hcd driver:

	Remove the product_desc string from the ehci_driver_overrides
	structure.  All drivers will use the generic "EHCI Host
	Controller" string.  (This was requested by Felipe Balbi.)

	Allow drivers to pass a NULL pointer to ehci_init_driver()
	if they don't have to override any settings.

	Remove a #define symbol that is no longer used from the
	ChipIdea host driver.

	Rename overrides to pci_overrides in ehci-pci.c, for
	consistency with ehci-platform.c.

	Mark the *_overrides structures as __initdata.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index fed97d3..caecad9 100644
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -25,17 +25,12 @@
 #include <linux/usb/hcd.h>
 #include <linux/usb/chipidea.h>
 
-#define CHIPIDEA_EHCI
 #include "../host/ehci.h"
 
 #include "ci.h"
 #include "bits.h"
 #include "host.h"
 
-static const struct ehci_driver_overrides ci_overrides = {
-	.product_desc =		"ChipIdea HDRC EHCI host controller",
-};
-
 static struct hc_driver __read_mostly ci_ehci_hc_driver;
 
 static irqreturn_t host_irq(struct ci13xxx *ci)
@@ -103,7 +98,7 @@
 	rdrv->name	= "host";
 	ci->roles[CI_ROLE_HOST] = rdrv;
 
-	ehci_init_driver(&ci_ehci_hc_driver, &ci_overrides);
+	ehci_init_driver(&ci_ehci_hc_driver, NULL);
 
 	return 0;
 }