Blackfin: ip0x: pull in asm/portmux.h for P_xxx defines

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

arch/blackfin/mach-bf533/boards/ip0x.c

@@ -20,6 +20,7 @@
 #endif
 #include <asm/irq.h>
 #include <asm/bfin5xx_spi.h>
+#include <asm/portmux.h>
 
 /*
  * Name the Board for the /proc/cpuinfo