refactor(ethos-n): move build flags to ethosn_npu.mk

The build flags to enable the Arm(R) Ethos(TM)-N NPU driver are in arm
platform specific make files i.e. plat/arm/common/arm_common.mk. These
flags are renamed and moved to ethosn_npu.mk. Other source and make
files are changed to reflect the changes in these flags.

Signed-off-by: Rajasekaran Kalidoss <rajasekaran.kalidoss@arm.com>
Change-Id: I6fd20225343c574cb5ac1f0f32ff2fc28ef37ea6
diff --git a/plat/arm/common/aarch64/arm_bl2_mem_params_desc.c b/plat/arm/common/aarch64/arm_bl2_mem_params_desc.c
index e512192..9a65e7c 100644
--- a/plat/arm/common/aarch64/arm_bl2_mem_params_desc.c
+++ b/plat/arm/common/aarch64/arm_bl2_mem_params_desc.c
@@ -223,17 +223,17 @@
 	},
 #endif /* EL3_PAYLOAD_BASE */
 
-# if ARM_ETHOSN_NPU_TZMP1
+# if ETHOSN_NPU_TZMP1
 	{
-		.image_id = ARM_ETHOSN_NPU_FW_IMAGE_ID,
+		.image_id = ETHOSN_NPU_FW_IMAGE_ID,
 		SET_STATIC_PARAM_HEAD(image_info, PARAM_IMAGE_BINARY,
 				      VERSION_2, image_info_t, 0),
-		.image_info.image_base = ARM_ETHOSN_NPU_FW_IMAGE_BASE,
-		.image_info.image_max_size = ARM_ETHOSN_NPU_FW_IMAGE_LIMIT -
-			ARM_ETHOSN_NPU_FW_IMAGE_BASE,
+		.image_info.image_base = ETHOSN_NPU_FW_IMAGE_BASE,
+		.image_info.image_max_size = ETHOSN_NPU_FW_IMAGE_LIMIT -
+			ETHOSN_NPU_FW_IMAGE_BASE,
 		.next_handoff_image_id = INVALID_IMAGE_ID,
 	},
-# endif
+#endif /* ETHOSN_NPU_TZMP1 */
 };
 
 REGISTER_BL_IMAGE_DESCS(bl2_mem_params_descs)