[lib][ptable] add a function to grab the device the current ptable has scanned

include/lib/ptable.h

@@ -30,6 +30,7 @@
 status_t ptable_scan(bdev_t *bdev, uint64_t offset);
 
 bool ptable_found_valid(void);
+bdev_t *ptable_get_device(void);
 
 #define MAX_FLASH_PTABLE_NAME_LEN 12
 

lib/ptable/ptable.c

@@ -286,6 +286,11 @@ bool ptable_found_valid(void)
     return ptable.valid;
 }
 
+bdev_t *ptable_get_device(void)
+{
+    return ptable.bdev;
+}
+
 status_t ptable_find(const char *name, struct ptable_entry *_entry)
 {
     if (!ptable.valid)