wip: set correct BKER bit when erasing bank 2 on G4

src/stlink-lib/common_flash.c

@@ -1130,9 +1130,9 @@ int32_t stlink_erase_flash_page(stlink_t *sl, stm32_addr_t flashaddr) {
       // In this case we need to specify which bank to erase (sec 3.7.5 - BKER)
       if(sl->flash_size > (128 * 1024) &&
           ((flashaddr - STM32_FLASH_BASE) >= sl->flash_size / 2)) {
-        val |= (1 << STM32_FLASH_Gx_CR_BKER); // erase bank 2
+        val |= (1 << STM32_FLASH_G4_CR_BKER); // erase bank 2
       } else {
-        val &= ~(1 << STM32_FLASH_Gx_CR_BKER); // erase bank 1
+        val &= ~(1 << STM32_FLASH_G4_CR_BKER); // erase bank 1
       }
       val |= ((flash_page & 0x7FF) << 3) | (1 << FLASH_CR_PER);
       stlink_write_debug32(sl, STM32_FLASH_Gx_CR, val);