amlogic: Move efuse code to common directory

The efuse code is the same between GXL and GXBB. Move the code to common
directory.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
Change-Id: Ie37f21d1907a36292724f1fb645a78041fe4a6b3
diff --git a/plat/amlogic/gxl/platform.mk b/plat/amlogic/gxl/platform.mk
index f239482..5c8206c 100644
--- a/plat/amlogic/gxl/platform.mk
+++ b/plat/amlogic/gxl/platform.mk
@@ -31,7 +31,7 @@
 				plat/common/plat_psci_common.c		\
 				${AML_PLAT_COMMON}/aarch64/aml_helpers.S	\
 				${AML_PLAT_SOC}/gxl_bl31_setup.c	\
-				${AML_PLAT_SOC}/gxl_efuse.c		\
+				${AML_PLAT_COMMON}/aml_efuse.c		\
 				${AML_PLAT_SOC}/gxl_mhu.c		\
 				${AML_PLAT_SOC}/gxl_pm.c		\
 				${AML_PLAT_COMMON}/aml_scpi.c		\