Correct SPL uses of ARMADA_3700

This converts 2 usages of this option to the non-SPL form, since there is
no SPL_ARMADA_3700 defined in Kconfig

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/mach-mvebu/arm64-common.c b/arch/arm/mach-mvebu/arm64-common.c
index b9745c3..5ab6925 100644
--- a/arch/arm/mach-mvebu/arm64-common.c
+++ b/arch/arm/mach-mvebu/arm64-common.c
@@ -51,7 +51,7 @@
 {
 	if (CONFIG_IS_ENABLED(ARMADA_8K))
 		return a8k_dram_init_banksize();
-	else if (CONFIG_IS_ENABLED(ARMADA_3700))
+	else if (IS_ENABLED(CONFIG_ARMADA_3700))
 		return a3700_dram_init_banksize();
 	else if (IS_ENABLED(CONFIG_ALLEYCAT_5))
 		return alleycat5_dram_init_banksize();
@@ -67,7 +67,7 @@
 			return 0;
 	}
 
-	if (CONFIG_IS_ENABLED(ARMADA_3700))
+	if (IS_ENABLED(CONFIG_ARMADA_3700))
 		return a3700_dram_init();
 
 	if (IS_ENABLED(CONFIG_ALLEYCAT_5))