blackfin: tcm-bf518: Remove dsa.h inclusion

Nothing in that file uses definitions from that header, so just get rid of it.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/blackfin/mach-bf518/boards/tcm-bf518.c

@@ -25,7 +25,6 @@
 #include <asm/dpmc.h>
 #include <asm/bfin_sdh.h>
 #include <linux/spi/ad7877.h>
-#include <net/dsa.h>
 
 /*
  * Name the Board for the /proc/cpuinfo