enable flto for ra makefile

- remove ra from ci make build since it is already in cmake ci

hw/bsp/ra/family.mk

@@ -3,12 +3,14 @@ DEPS_SUBMODULES += hw/mcu/renesas/fsp lib/CMSIS_5
 FSP_RA = hw/mcu/renesas/fsp/ra/fsp
 include $(TOP)/$(BOARD_PATH)/board.mk
 
+# Don't include options setting in .bin file since it create unnecessary large file due to padding
 OBJCOPY_BIN_OPTION = --only-section .text --only-section .data --only-section .rodata --only-section .bss
 
 # Default to port 0 fullspeed, board with port 1 highspeed should override this in board.mk
 PORT ?= 0
 
 CFLAGS += \
+  -flto \
   -DCFG_TUSB_MCU=OPT_MCU_RAXXX \
   -DBOARD_TUD_RHPORT=$(PORT) \
 	-Wno-error=undef \