can-gps-v1:Correct Memory size used by app and bootloader size

boards/cuav/can-gps-v1/nuttx-config/scripts/script.ld

@@ -71,13 +71,15 @@ SECTIONS
 	.text : {
 		_stext = ABSOLUTE(.);
 		*(.vectors)
-		. = ALIGN(32);
-		/*
-		This signature provides the bootloader with a way to delay booting
-		*/
-		_bootdelay_signature = ABSOLUTE(.);
-		FILL(0xffecc2925d7d05c5)
-		. += 8;
+		. = ALIGN(8);
+      /*
+       * This section positions the app_descriptor_t used
+       * by the make_can_boot_descriptor.py tool to set
+       * the application image's descriptor so that the
+       * uavcan bootloader has the ability to validate the
+       * image crc, size etc
+      */
+    KEEP(*(.app_descriptor))
 		*(.text .text.*)
 		*(.fixup)
 		*(.gnu.warning)

boards/cuav/can-gps-v1/src/boot_config.h

@@ -101,7 +101,7 @@
 #define OPT_RESTART_TIMEOUT_MS          20000
 
 /* Reserved for the Booloader */
-#define OPT_BOOTLOADER_SIZE_IN_K        (1024*8)
+#define OPT_BOOTLOADER_SIZE_IN_K        (1024*64)
 
 /* Reserved for the application out of the total
  * system flash minus the BOOTLOADER_SIZE_IN_K