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

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

boards/arm/imxrt/teensy-4.x/scripts/Make.defs

@@ -43,10 +43,6 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  ARCHOPTIMIZATION = -g
-endif
-
 ifneq ($(CONFIG_DEBUG_NOOPT),y)
   ARCHOPTIMIZATION += $(MAXOPTIMIZATION)
 endif
@@ -72,7 +68,3 @@ CMODULEFLAGS = $(CFLAGS) -mlong-calls # --target1-abs
 
 LDMODULEFLAGS = -r -e module_initialize
 LDMODULEFLAGS += -T $(call CONVERT_PATH,$(TOPDIR)/libs/libc/modlib/gnu-elf.ld)
-
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  LDFLAGS += -g
-endif