[media] staging: as102: Enable compilation

Fix compilation errors in the USB driver by replacing usb_buffer_free(),
usb_buffer_alloc() with usb_free_coherent() and usb_alloc_coherent().
Add entries for the driver in parent Makefile and Kconfig.

[snjw23@gmail.com: minor edit to changelog]
Cc: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Piotr Chmura <chmooreck@poczta.onet.pl>
Signed-off-by: Sylwester Nawrocki <snjw23@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/staging/Kconfig

@@ -144,4 +144,6 @@ source "drivers/staging/mei/Kconfig"
 
 source "drivers/staging/nvec/Kconfig"
 
+source "drivers/staging/media/as102/Kconfig"
+
 endif # STAGING

drivers/staging/Makefile

@@ -63,3 +63,4 @@ obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_I2C_RMI4)	+= ste_rmi4/
 obj-$(CONFIG_DRM_PSB)		+= gma500/
 obj-$(CONFIG_INTEL_MEI)		+= mei/
 obj-$(CONFIG_MFD_NVEC)		+= nvec/
+obj-$(CONFIG_DVB_AS102)		+= media/as102/

drivers/staging/media/as102/as102_usb_drv.c

@@ -238,7 +238,7 @@ static void as102_free_usb_stream_buffer(struct as102_dev_t *dev)
 	for (i = 0; i < MAX_STREAM_URB; i++)
 		usb_free_urb(dev->stream_urb[i]);
 
-	usb_buffer_free(dev->bus_adap.usb_dev,
+	usb_free_coherent(dev->bus_adap.usb_dev,
 			MAX_STREAM_URB * AS102_USB_BUF_SIZE,
 			dev->stream,
 			dev->dma_addr);
@@ -251,7 +251,7 @@ static int as102_alloc_usb_stream_buffer(struct as102_dev_t *dev)
 
 	ENTER();
 
-	dev->stream = usb_buffer_alloc(dev->bus_adap.usb_dev,
+	dev->stream = usb_alloc_coherent(dev->bus_adap.usb_dev,
 				       MAX_STREAM_URB * AS102_USB_BUF_SIZE,
 				       GFP_KERNEL,
 				       &dev->dma_addr);