cbmem console: reduce temporary buffer size for dynamic CBMEM

When using dynamic CBMEM the CBMEM area is initialized before
entering ram stage, and so we need a way smaller temporary buffer
for the CBMEM console during early bits of ram stage. In practice
around 256 bytes are needed, but keep the buffer at 1k so we make
sure we don't run out.

TEST=Boot tested on pit
BRANCH=none
BUG=none

Change-Id: I462810b7bafbcc57f8e5f9b1d1f38cfdf85fa630
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: https://chromium-review.googlesource.com/168575
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/lib/cbmem_console.c b/src/lib/cbmem_console.c
index 45ab1ff..8076425 100644
--- a/src/lib/cbmem_console.c
+++ b/src/lib/cbmem_console.c
@@ -64,7 +64,13 @@
  * to be concatenated with the CBMEM console buffer contents accumulated
  * during the ROM stage, once CBMEM becomes available at RAM stage.
  */
-static u8 static_console[40000];
+
+#if CONFIG_DYNAMIC_CBMEM
+#define STATIC_CONSOLE_SIZE 1024
+#else
+#define STATIC_CONSOLE_SIZE 40000
+#endif
+static u8 static_console[STATIC_CONSOLE_SIZE];
 #endif
 
 static inline struct cbmem_console *current_console(void)