musb-new: port of Linux musb driver

Existing U-Boot musb driver has no support for the new gadget framework
and also seems to have other limitations. As gadget framework is ported
from Linux it seems pretty natural to port musb gadget driver as well.

This driver supports both host and peripheral modes.

This is not a replacement for current musb driver (at least now) as
there are still some consumers of the old UDC interface.

No DMA operation support included, CONFIG_MUSB_PIO_ONLY should be
defined.

Virtual root hub device is not implemented.

Known problems: with no devices connected usb_lowlevel_start() fails.

Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
diff --git a/drivers/usb/musb-new/Makefile b/drivers/usb/musb-new/Makefile
new file mode 100644
index 0000000..f01fb16
--- /dev/null
+++ b/drivers/usb/musb-new/Makefile
@@ -0,0 +1,36 @@
+#
+# for USB OTG silicon based on Mentor Graphics INVENTRA designs
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	:= $(obj)libusb_musb-new.o
+
+COBJS-$(CONFIG_MUSB_GADGET) += musb_gadget.o musb_gadget_ep0.o musb_core.o
+COBJS-$(CONFIG_MUSB_GADGET) += musb_uboot.o
+COBJS-$(CONFIG_MUSB_HOST) += musb_host.o musb_core.o musb_uboot.o
+
+CFLAGS_NO_WARN := $(call cc-option,-Wno-unused-variable) \
+			$(call cc-option,-Wno-unused-but-set-variable) \
+			$(call cc-option,-Wno-unused-label)
+CFLAGS += $(CFLAGS_NO_WARN)
+
+COBJS	:= $(sort $(COBJS-y))
+SRCS	:= $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+
+all:	$(LIB)
+
+#$(LIB):	$(OBJS)
+$(LIB):	$(obj).depend $(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
+