board: arm:: Add support for Broadcom BCM23550

Add support for the Broadcom BCM23550 board.

Signed-off-by: Steve Rae <srae@broadcom.com>
diff --git a/arch/arm/cpu/armv7/Makefile b/arch/arm/cpu/armv7/Makefile
index 328c4b1..0a5ac97 100644
--- a/arch/arm/cpu/armv7/Makefile
+++ b/arch/arm/cpu/armv7/Makefile
@@ -38,6 +38,7 @@
 endif
 
 obj-$(if $(filter am33xx,$(SOC)),y) += am33xx/
+obj-$(if $(filter bcm235xx,$(SOC)),y) += bcm235xx/
 obj-$(if $(filter bcm281xx,$(SOC)),y) += bcm281xx/
 obj-$(if $(filter bcmcygnus,$(SOC)),y) += bcmcygnus/
 obj-$(if $(filter bcmnsp,$(SOC)),y) += bcmnsp/