Tegra: include flowctlr driver from SoC specific makefiles

The Flow Controller hardware block is not present across all Tegra
SoCs, hence include the driver files from SoC specific makefiles.

T132/T210 are the SoCs which include this hardware block while future
SoCs have removed it.

Change-Id: Iaca25766a4fa51567293d10cf14dae968b0fae80
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

plat/nvidia/tegra/common/tegra_common.mk

@@ -56,7 +56,6 @@ BL31_SOURCES		+=	drivers/arm/gic/gic_v2.c			\
 				${COMMON_DIR}/aarch64/tegra_helpers.S		\
 				${COMMON_DIR}/drivers/memctrl/memctrl.c		\
 				${COMMON_DIR}/drivers/pmc/pmc.c			\
-				${COMMON_DIR}/drivers/flowctrl/flowctrl.c	\
 				${COMMON_DIR}/tegra_bl31_setup.c		\
 				${COMMON_DIR}/tegra_delay_timer.c		\
 				${COMMON_DIR}/tegra_gic.c			\

plat/nvidia/tegra/soc/t132/platform_t132.mk

@@ -41,6 +41,7 @@ PLATFORM_MAX_CPUS_PER_CLUSTER	:= 2
 $(eval $(call add_define,PLATFORM_MAX_CPUS_PER_CLUSTER))
 
 BL31_SOURCES		+=	lib/cpus/aarch64/denver.S		\
+				${COMMON_DIR}/drivers/flowctrl/flowctrl.c	\
 				${SOC_DIR}/plat_psci_handlers.c		\
 				${SOC_DIR}/plat_setup.c			\
 				${SOC_DIR}/plat_secondary.c

plat/nvidia/tegra/soc/t210/platform_t210.mk

@@ -54,6 +54,7 @@ $(eval $(call add_define,PLATFORM_MAX_CPUS_PER_CLUSTER))
 
 BL31_SOURCES		+=	lib/cpus/aarch64/cortex_a53.S		\
 				lib/cpus/aarch64/cortex_a57.S		\
+				${COMMON_DIR}/drivers/flowctrl/flowctrl.c	\
 				${SOC_DIR}/plat_psci_handlers.c		\
 				${SOC_DIR}/plat_setup.c			\
 				${SOC_DIR}/plat_secondary.c