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

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

boards/risc-v/c906/smartl-c906/scripts/Make.defs

@@ -30,11 +30,6 @@ endif
 
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  ARCHOPTIMIZATION = -g
-  ASARCHCPUFLAGS += -Wa,-g
-endif
-
 ifneq ($(CONFIG_DEBUG_NOOPT),y)
   ARCHOPTIMIZATION += $(MAXOPTIMIZATION) -fno-strict-aliasing
 endif
@@ -54,7 +49,7 @@ CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
 CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-AFLAGS += $(CFLAGS) -D__ASSEMBLY__ $(ASARCHCPUFLAGS)
+AFLAGS += $(CFLAGS) -D__ASSEMBLY__
 
 # Loadable module definitions