arm: Bump COMMAND_LINE_SIZE to 2048.

The current limit is small for Android Things Verity Boot args.
Bump it.

Change-Id: I091c7f6d4912fec57ecca7dcab38cc99c5b6dfb5
Signed-off-by: Cody Xie <cody.xie@rock-chips.com>

Author: Cody Xie

arch/arm/include/uapi/asm/setup.h

@@ -16,7 +16,7 @@
 
 #include <linux/types.h>
 
-#define COMMAND_LINE_SIZE 1024
+#define COMMAND_LINE_SIZE 2048
 
 /* The list ends with an ATAG_NONE node. */
 #define ATAG_NONE	0x00000000