[bsp][w60x] update GCC linker scripts

bsp/w60x/drivers/linker_scripts/link.lds

@@ -10,6 +10,7 @@ MEMORY
 {
     FLASH (rx) : ORIGIN = 0x8010100, LENGTH = 959K    /* 960K-256B */
     RAM (rw) : ORIGIN = 0x20000000, LENGTH = 0x28000  /* 160K */
+    RAM2 (rw) : ORIGIN = 0x20028000, LENGTH = 0x14000 /* 80K */
 }
 
 /* Linker script to place sections and symbol values. Should be used together
@@ -164,6 +165,13 @@ SECTIONS
         __stack_end__ = .;
     } > RAM
 
+    ._bss :
+    {
+        . = ALIGN(8);
+        __bss2_start__ = .;
+        __bss2_end__ = .;
+    } > RAM2
+
     .bss __stack_end__ :
     {
         . = ALIGN(4);