Remove unnecessary instances of DECLARE_GLOBAL_DATA_PTR

We have a large number of places where while we historically referenced
gd in the code we no longer do, as well as cases where the code added
that line "just in case" during development and never dropped it.

Signed-off-by: Tom Rini <trini@konsulko.com>

drivers/phy/meson-gxl-usb2.c

@@ -21,8 +21,6 @@
 #include <linux/bitops.h>
 #include <linux/compat.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 /* bits [31:27] are read-only */
 #define U2P_R0							0x0
 	#define U2P_R0_BYPASS_SEL				BIT(0)

drivers/phy/meson-gxl-usb3.c

@@ -21,8 +21,6 @@
 #include <linux/compat.h>
 #include <linux/bitfield.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 #define USB_R0							0x00
 	#define USB_R0_P30_FSEL_MASK				GENMASK(5, 0)
 	#define USB_R0_P30_PHY_RESET				BIT(6)

drivers/phy/phy-uclass.c

@@ -9,8 +9,6 @@
 #include <dm.h>
 #include <generic-phy.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 static inline struct phy_ops *phy_dev_ops(struct udevice *dev)
 {
 	return (struct phy_ops *)dev->driver->ops;

drivers/phy/sandbox-phy.c

@@ -9,8 +9,6 @@
 #include <dm.h>
 #include <generic-phy.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 struct sandbox_phy_priv {
 	bool initialized;
 	bool on;