arm: mvebu: Remove reference to ARMADA_370

Drop this as it is not referenced anywhere else in the code.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index a23511b..28d3e5e 100644
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@@ -35,7 +35,7 @@
 
 extra-y += kwbimage.cfg
 
-ifneq ($(CONFIG_ARMADA_370)$(CONFIG_ARMADA_XP),)
+ifneq ($(CONFIG_ARMADA_XP),)
 	KWB_REPLACE += CPU
 	KWB_CFG_CPU = SHEEVA
 else ifneq ($(CONFIG_ARMADA_375)$(CONFIG_ARMADA_38X)$(CONFIG_ARMADA_39X),)