bootloader: Fix dram_seg

components/bootloader/subproject/main/ld/esp32s2beta/bootloader.ld

@@ -15,8 +15,8 @@ MEMORY
   dport0_seg (RW) :                 org = 0x3FF00000, len = 0x10
   iram_loader_seg (RWX) :           org = 0x40062000, len = 0x4000  /* 16KB, IRAM */
   iram_seg (RWX) :                  org = 0x40066000, len = 0x4000  /* 16KB, IRAM */
-  /* 16k at the end of DRAM, before ROM data & stack */
-  dram_seg (RW) :                   org = 0x3FFF8000, len = 0x4000
+  /* 8k at the end of DRAM, before ROM data & stack */
+  dram_seg (RW) :                   org = 0x3FFFA000, len = 0x2000
 }
 
 /*  Default entry point:  */