boards: Move -g from Make.defs to Toolchain.defs

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

boards/arm/stm32h7/nucleo-h743zi/scripts/Make.defs

@@ -26,10 +26,6 @@ LDSCRIPT = flash.ld
 
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  ARCHOPTIMIZATION = -g
-endif
-
 ifneq ($(CONFIG_DEBUG_NOOPT),y)
   ARCHOPTIMIZATION += $(MAXOPTIMIZATION) -fno-strict-aliasing
 endif
@@ -56,7 +52,3 @@ CXXELFFLAGS = $(CXXFLAGS) -mlong-calls # --target1-abs
 
 LDELFFLAGS = -r -e main
 LDELFFLAGS += -T $(call CONVERT_PATH,$(TOPDIR)/binfmt/libelf/gnu-elf.ld)
-
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  LDFLAGS += -g
-endif