mips: qemu-mips/64: Expand malloc pool for CONFIG_SYS_BOOTPARAMS_LEN

Before this patch, CONFIG_SYS_BOOTPARAMS_LEN was the same size as
CONFIG_SYS_MALLOC_LEN. So, if malloc() had previously been called, and
initr_malloc_bootparams() was called, it would fail with an out-of-
memory error. This patch fixes this issue by expanding the malloc pool
to 256KB.

Signed-off-by: Kyle Edwards <kyleedwardsny@gmail.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
diff --git a/include/configs/qemu-mips64.h b/include/configs/qemu-mips64.h
index 4856087..28b791a 100644
--- a/include/configs/qemu-mips64.h
+++ b/include/configs/qemu-mips64.h
@@ -80,7 +80,7 @@
 /* max number of command args */
 #define CONFIG_SYS_MAXARGS		16
 
-#define CONFIG_SYS_MALLOC_LEN		128*1024
+#define CONFIG_SYS_MALLOC_LEN		(256 << 10)
 
 #define CONFIG_SYS_BOOTPARAMS_LEN	128*1024