arm: sunxi: Correct warning in board_fit_config_name_match

When building this with clang, we get a warning about having excess
parenthesis here, or that we're incorrectly using "==" when we want "=".
Correct these by using the common size macro.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[Andre: Use SZ_512M as per Simon's suggestion]
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/board/sunxi/board.c b/board/sunxi/board.c
index 02fc3ee..80589f9 100644
--- a/board/sunxi/board.c
+++ b/board/sunxi/board.c
@@ -34,6 +34,7 @@
 #include <asm/global_data.h>
 #include <linux/delay.h>
 #include <linux/printk.h>
+#include <linux/types.h>
 #ifndef CONFIG_ARM64
 #include <asm/armv7.h>
 #endif
@@ -937,7 +938,7 @@
 #ifdef CONFIG_PINE64_DT_SELECTION
 	if (strstr(best_dt_name, "-pine64-plus")) {
 		/* Differentiate the Pine A64 boards by their DRAM size. */
-		if ((gd->ram_size == 512 * 1024 * 1024))
+		if (gd->ram_size == SZ_512M)
 			best_dt_name = "sun50i-a64-pine64";
 	}
 #endif