cassini/niu/sun*: Move the Sun drivers

Moves the Sun drivers into drivers/net/ethernet/sun/ and make
the necessary Kconfig and Makefile changes.

Oliver Hartkopp <socketcan@hartkopp.net> suggested removing the
sun* prefix on the driver names.  This type of change I will
leave up to the driver maintainers.

CC: Sam Creasey <sammy@sammy.net>
CC: Adrian Sun <asun@darksunrising.com>
CC: Benjamin Herrenscmidt <benh@kernel.crashing.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 19bd60d..1cb72da 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6272,6 +6272,7 @@
 F:	arch/m68k/kernel/*sun3*
 F:	arch/m68k/sun3*/
 F:	arch/m68k/include/asm/sun3*
+F:	drivers/net/ethernet/i825xx/sun3*
 
 SUPERH
 M:	Paul Mundt <lethal@linux-sh.org>