Update to support bootloader offset

Author: GerogeFu

boards.txt

@@ -1722,6 +1722,8 @@ LoRa.menu.upload_method.dfuMethod.upload.tool=stm32CubeProg
 3dprinter.menu.pnum.FYSETC_S6.build.product_line=STM32F446xx
 3dprinter.menu.pnum.FYSETC_S6.build.variant=FYSETC_S6
 3dprinter.menu.pnum.FYSETC_S6.build.cmsis_lib_gcc=arm_cortexM4lf_math
+3dprinter.menu.pnum.MALYANM300_F070CB.build.flash_offset=0x10000
+3dprinter.menu.pnum.MALYANM200_F070CB.build.extra_flags=-D{build.product_line} {build.enable_usb} {build.xSerial} -DVECT_TAB_OFFSET={build.flash_offset}
 
 # Upload menu
 3dprinter.menu.upload_method.swdMethod=STM32CubeProgrammer (SWD)

variants/FYSETC_S6/ldscript.ld

@@ -60,7 +60,7 @@ _Min_Stack_Size = 0x400;; /* required amount of stack */
 /* Specify the memory areas */
 MEMORY
 {
-FLASH (rx)      : ORIGIN = 0x8010000, LENGTH = 512K
+FLASH (rx)      : ORIGIN = 0x8010000, LENGTH = 448K
 RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 128K
 }