t132: Make non-vboot2 memlayout more useful

Update non-vboot2 memlayout:
1) Add timestamp region
2) Increase ramstage size
3) Change name from memlayout_vboot.ld to memlayout.ld so that any non-vboot
upstream board can also use this layout.

BUG=None
BRANCH=None
TEST=Compiles and boots to kernel prompt on ryu with vboot selected instead of
vboot2.

Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: I91accd54efc53ab563a2063b9c6e9390f5dd527f
Reviewed-on: https://chromium-review.googlesource.com/231547
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
Commit-Queue: Furquan Shaikh <furquan@chromium.org>

src/mainboard/google/rush/memlayout.ld

@@ -1,6 +1,6 @@
 #if IS_ENABLED(CONFIG_VBOOT2_VERIFY_FIRMWARE)
 #include <soc/memlayout_vboot2.ld>
 #else
-#include <soc/memlayout_vboot.ld>
+#include <soc/memlayout.ld>
 #endif
 

src/mainboard/google/rush_ryu/memlayout.ld

@@ -1,5 +1,5 @@
 #if IS_ENABLED(CONFIG_VBOOT2_VERIFY_FIRMWARE)
 #include <soc/memlayout_vboot2.ld>
 #else
-#include <soc/memlayout_vboot.ld>
+#include <soc/memlayout.ld>
 #endif

src/soc/nvidia/tegra132/include/soc/memlayout.ld

@@ -32,12 +32,14 @@ SECTIONS
 {
 	SRAM_START(0x40000000)
 	PRERAM_CBMEM_CONSOLE(0x40000000, 8K)
-	CBFS_CACHE(0x40002000, 88K)
-	STACK(0x40018000, 16K)
-	BOOTBLOCK(0x4001C000, 20K)
+	PRERAM_CBFS_CACHE(0x40002000, 84K)
+	STACK(0x40017000, 16K)
+	TIMESTAMP(0x4001B000, 2K)
+	BOOTBLOCK(0x4001B800, 22K)
 	ROMSTAGE(0x40021000, 124K)
 	SRAM_END(0x40040000)
 
 	DRAM_START(0x80000000)
-	RAMSTAGE(0x80200000, 192K)
+	POSTRAM_CBFS_CACHE(0x80100000, 1M)
+	RAMSTAGE(0x80200000, 256K)
 }