tty: move hvc drivers to drivers/tty/hvc/

As requested by Arnd Bergmann, the hvc drivers are now
moved to the drivers/tty/hvc/ directory.  The virtio_console.c driver
was also moved, as it required the hvc_console.h file to be able to be
built, and it really is a hvc driver.

Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/tty/Makefile

diff --git a/drivers/tty/Makefile b/drivers/tty/Makefile
index c43ef48..d3685f0 100644
--- a/drivers/tty/Makefile
+++ b/drivers/tty/Makefile
@@ -9,3 +9,4 @@
 obj-$(CONFIG_R3964)		+= n_r3964.o
 
 obj-y				+= vt/
+obj-$(CONFIG_HVC_DRIVER)	+= hvc/