libpayload: adjust max number of memranges

Rambi currently has more than 16 memory ranges. Because of
this libpayload is silently dropping them and the full amount
of memory is not being properly wiped. Correct this by bumping
the number of ranges to 32.

BUG=None
BRANCH=None
TEST=Built and booted rambi. Noted that the full amount of memory
     was being properly wiped.

Change-Id: Ida456decf2498cb1547c0ceef23df446a975606b
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/175792
Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: http://review.coreboot.org/4942
Reviewed-by: Aaron Durbin <adurbin@google.com>
Tested-by: build bot (Jenkins)
diff --git a/payloads/libpayload/include/sysinfo.h b/payloads/libpayload/include/sysinfo.h
index fd60dc3..a66c1e7 100644
--- a/payloads/libpayload/include/sysinfo.h
+++ b/payloads/libpayload/include/sysinfo.h
@@ -30,8 +30,8 @@
 #ifndef _SYSINFO_H
 #define _SYSINFO_H
 
-/* Allow a maximum of 16 memory range definitions. */
-#define SYSINFO_MAX_MEM_RANGES 16
+/* Maximum number of memory range definitions. */
+#define SYSINFO_MAX_MEM_RANGES 32
 /* Allow a maximum of 8 GPIOs */
 #define SYSINFO_MAX_GPIOS 8