toolchain/binutils: use default Host/Configure rule

This seems to have been omitted over-time.
Using the default Host/Configure seems to work fine.

The last patches to have touched this in a major way were ~10 years ago:
33a0eb3613 ("cosmetic & coherency fixes")
7eb1589875 ("build system refactoring in preparation for allowing
              packages to do host-build steps")

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

toolchain/binutils/Makefile

@@ -33,8 +33,7 @@ PATCH_DIR:=./patches/$(PKG_VERSION)
 
 include $(INCLUDE_DIR)/toolchain-build.mk
 
-BINUTILS_CONFIGURE:= \
-	./configure \
+HOST_CONFIGURE_ARGS = \
 	--prefix=$(TOOLCHAIN_DIR) \
 	--build=$(GNU_HOST_NAME) \
 	--host=$(GNU_HOST_NAME) \
@@ -52,15 +51,15 @@ BINUTILS_CONFIGURE:= \
 	$(call qstrip,$(CONFIG_EXTRA_BINUTILS_CONFIG_OPTIONS))
 
 ifneq ($(CONFIG_SSP_SUPPORT),)
-  BINUTILS_CONFIGURE+= \
+  HOST_CONFIGURE_ARGS+= \
 		--enable-libssp
 else
-  BINUTILS_CONFIGURE+= \
+  HOST_CONFIGURE_ARGS+= \
 		--disable-libssp
 endif
 
 ifneq ($(CONFIG_EXTRA_TARGET_ARCH),)
-  BINUTILS_CONFIGURE+= \
+  HOST_CONFIGURE_ARGS+= \
 		--enable-targets=$(call qstrip,$(CONFIG_EXTRA_TARGET_ARCH_NAME))-linux-$(TARGET_SUFFIX)
 endif
 
@@ -71,12 +70,6 @@ define Host/Prepare
 	$(SED) 's, " Linaro.*,,' $(HOST_BUILD_DIR)/bfd/version.h
 endef
 
-define Host/Configure
-	(cd $(HOST_BUILD_DIR); \
-		$(BINUTILS_CONFIGURE) \
-	);
-endef
-
 define Host/Compile
 	+$(MAKE) $(HOST_JOBS) -C $(HOST_BUILD_DIR) all
 endef