platform: thulium: Add support for rpmb

Add rpmb support for thulium platform.

Change-Id: I5a0de8e6c3e011c8932c613f67296538e6927d6f
diff --git a/target/thulium/rules.mk b/target/thulium/rules.mk
index 5ec0e88..982f4ee 100644
--- a/target/thulium/rules.mk
+++ b/target/thulium/rules.mk
@@ -5,11 +5,11 @@
 PLATFORM := thulium
 
 MEMBASE := 0x8F000000 # SDRAM
-MEMSIZE := 0x00100000 # 1MB
+MEMSIZE := 0x00200000 # 2MB
 
 BASE_ADDR    := 0x0000000
 
-SCRATCH_ADDR := 0x8F100000
+SCRATCH_ADDR := 0x8F300000
 SCRATCH_SIZE := 512
 KERNEL_ADDR  := 0x80000000
 KERNEL_SIZE  := 62