Use correct spelling of "U-Boot"

Correct spelling of "U-Boot" shall be used in all written text
(documentation, comments in source files etc.).

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index a13b21d..60f9272 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -2,7 +2,7 @@
  * composite.c - infrastructure for Composite USB Gadgets
  *
  * Copyright (C) 2006-2008 David Brownell
- * U-boot porting: Lukasz Majewski <l.majewski@samsung.com>
+ * U-Boot porting: Lukasz Majewski <l.majewski@samsung.com>
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
diff --git a/drivers/usb/gadget/config.c b/drivers/usb/gadget/config.c
index 014a679..64284b0 100644
--- a/drivers/usb/gadget/config.c
+++ b/drivers/usb/gadget/config.c
@@ -5,7 +5,7 @@
  *
  * SPDX-License-Identifier:	GPL-2.0+
  *
- * Ported to U-boot by: Thomas Smits <ts.smits@gmail.com> and
+ * Ported to U-Boot by: Thomas Smits <ts.smits@gmail.com> and
  *                      Remy Bohmer <linux@bohmer.net>
  */
 
diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c
index 6ddbe83..a53a6dc 100644
--- a/drivers/usb/gadget/epautoconf.c
+++ b/drivers/usb/gadget/epautoconf.c
@@ -7,7 +7,7 @@
  *
  * SPDX-License-Identifier:	GPL-2.0+
  *
- * Ported to U-boot by: Thomas Smits <ts.smits@gmail.com> and
+ * Ported to U-Boot by: Thomas Smits <ts.smits@gmail.com> and
  *                      Remy Bohmer <linux@bohmer.net>
  */
 
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index cfe9a24..9b06f02 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -256,7 +256,7 @@
 #if defined(CONFIG_USBNET_MANUFACTURER)
 static char *iManufacturer = CONFIG_USBNET_MANUFACTURER;
 #else
-static char *iManufacturer = "U-boot";
+static char *iManufacturer = "U-Boot";
 #endif
 
 /* These probably need to be configurable. */
diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h
index e9811c3..973cd97 100644
--- a/drivers/usb/gadget/gadget_chips.h
+++ b/drivers/usb/gadget/gadget_chips.h
@@ -11,7 +11,7 @@
  * Some are available on 2.4 kernels; several are available, but not
  * yet pushed in the 2.6 mainline tree.
  *
- * Ported to U-boot by: Thomas Smits <ts.smits@gmail.com> and
+ * Ported to U-Boot by: Thomas Smits <ts.smits@gmail.com> and
  *                      Remy Bohmer <linux@bohmer.net>
  */
 #ifdef CONFIG_USB_GADGET_NET2280
diff --git a/drivers/usb/gadget/usbstring.c b/drivers/usb/gadget/usbstring.c
index 8c3ff64..3e24fbf 100644
--- a/drivers/usb/gadget/usbstring.c
+++ b/drivers/usb/gadget/usbstring.c
@@ -3,7 +3,7 @@
  *
  * SPDX-License-Identifier:	LGPL-2.1+
  *
- * Ported to U-boot by: Thomas Smits <ts.smits@gmail.com> and
+ * Ported to U-Boot by: Thomas Smits <ts.smits@gmail.com> and
  *                      Remy Bohmer <linux@bohmer.net>
  */