rockchip: move pmusram assembler code to a aarch64 subdir

The current code doing power-management from sram is highly
arm64-specific so should live in a corresponding subdirectory
and not in the common area.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Change-Id: I3b79ac26f70fd189d4d930faa6251439a644c5d9
diff --git a/plat/rockchip/rk3368/platform.mk b/plat/rockchip/rk3368/platform.mk
index d1315fc..8988dc5 100644
--- a/plat/rockchip/rk3368/platform.mk
+++ b/plat/rockchip/rk3368/platform.mk
@@ -12,7 +12,7 @@
 
 PLAT_INCLUDES		:=	-I${RK_PLAT_COMMON}/				\
 				-I${RK_PLAT_COMMON}/include/			\
-				-I${RK_PLAT_COMMON}/pmusram			\
+				-I${RK_PLAT_COMMON}/aarch64/			\
 				-I${RK_PLAT_COMMON}/drivers/pmu/			\
 				-I${RK_PLAT_SOC}/				\
 				-I${RK_PLAT_SOC}/drivers/pmu/			\
@@ -41,7 +41,7 @@
 				${RK_PLAT_COMMON}/aarch64/plat_helpers.S	\
 				${RK_PLAT_COMMON}/bl31_plat_setup.c		\
 				${RK_PLAT_COMMON}/params_setup.c                \
-				${RK_PLAT_COMMON}/pmusram/pmu_sram_cpus_on.S		\
+				${RK_PLAT_COMMON}/aarch64/pmu_sram_cpus_on.S	\
 				${RK_PLAT_COMMON}/plat_pm.c			\
 				${RK_PLAT_COMMON}/plat_topology.c		\
 				${RK_PLAT_COMMON}/aarch64/platform_common.c	\