hikey: Remove unnecessary code

PLATFORM_LINKER_FORMAT
and
PLATFORM_LINKER_ARCH
defines are removed from
plat/hisilicon/hikey/include/platform_def.h
since there are already defined in
include/plat/common/common_def.h
which is included by
plat/hisilicon/hikey/hikey_def.h
which is included by
plat/hisilicon/hikey/include/platform_def.h

The line
$(eval $(call FIP_ADD_IMG,SCP_BL2,--scp-fw))
is removed from
plat/hisilicon/hikey/platform.mk
to clear the warning below:

Makefile:544: warning: overriding commands for target `check_SCP_BL2'
plat/hisilicon/hikey/platform.mk:19: warning: ignoring old commands for target `check_SCP_BL2'

$(eval $(call FIP_ADD_IMG,SCP_BL2,--scp-fw))
already exists in
Makefile
and applies to plat hikey so is redundant in
plat/hisilicon/hikey/platform.mk
Signed-off-by: Victor Chong <victor.chong@linaro.org>

plat/hisilicon/hikey/include/platform_def.h

@@ -10,13 +10,6 @@
 #include <arch.h>
 #include "../hikey_def.h"
 
-/*
- * Platform binary types for linking
- */
-#define PLATFORM_LINKER_FORMAT          "elf64-littleaarch64"
-#define PLATFORM_LINKER_ARCH            aarch64
-
-
 /*
  * Generic platform constants
  */

plat/hisilicon/hikey/platform.mk

@@ -16,7 +16,6 @@ $(eval $(call add_define,CONSOLE_BASE))
 $(eval $(call add_define,CRASH_CONSOLE_BASE))
 $(eval $(call add_define,PLAT_PL061_MAX_GPIOS))
 $(eval $(call add_define,PLAT_PARTITION_MAX_ENTRIES))
-$(eval $(call FIP_ADD_IMG,SCP_BL2,--scp-fw))
 
 ENABLE_PLAT_COMPAT	:=	0