boards: tlsr: Add specific section for discribe information

Add specific section for discribe information, current use for
factory test.

Signed-off-by: Lingao Meng <menglingao@xiaomi.com>

boards/arm/tlsr82/tlsr8278adk80d/scripts/flash_boot_ble.ld

@@ -182,6 +182,9 @@ SECTIONS
         *(.data);
         *(.data.*);
         . = ALIGN(4);
+        KEEP(*(.info));
+        KEEP(*(.info.*));
+        . = ALIGN(4);
         PROVIDE(_end_data_ = . );
     }