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

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

boards/arm/phy62xx/phy6222/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
@@ -50,7 +46,3 @@ CFLAGS +=
 NXFLATLDFLAGS1 = -r -Wl,-d -Wl,-warn-common
 NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-pcrel.ld -Wl,-no-check-sections
 LDNXFLATFLAGS = -e main -s 2048
-
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  LDFLAGS += -g
-endif