rockchip: add pmusram section

the function pmu_cpuon_entrypoint() need to run in the pmusram,
we just copy bin file to pmusram before, now we add pmusram section
and link pmu_cpuon_entrypoint() to pmusram directly

Change-Id: Iae31e4c01c480c8e6f565a8f588332b478efdb16
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
diff --git a/plat/rockchip/common/aarch64/platform_common.c b/plat/rockchip/common/aarch64/platform_common.c
index 9c68b3b..a756f40 100644
--- a/plat/rockchip/common/aarch64/platform_common.c
+++ b/plat/rockchip/common/aarch64/platform_common.c
@@ -44,7 +44,7 @@
 				coh_limit - coh_start,			\
 				MT_DEVICE | MT_RW | MT_SECURE);		\
 		mmap_add(plat_rk_mmap);					\
-		rockchip_plat_sram_mmu_el##_el();			\
+		rockchip_plat_mmu_el##_el();				\
 		init_xlat_tables();					\
 									\
 		enable_mmu_el ## _el(0);				\