Kernel/Storage: Dump detected devices and partitions before PANIC()'ing

If we panic the kernel for a storage-related reason, we might as well be
helpful and print out a list of detected storage devices and their
partitions to help with debugging.

Reasons for such a panic include:
- No boot device with the given name found
- No boot device with the given UUID found
- Failing to open the root filesystem after determining a boot device

Kernel/Storage/StorageManagement.h

@@ -43,6 +43,8 @@ private:
     void determine_boot_device();
     void determine_boot_device_with_partition_uuid();
 
+    void dump_storage_devices_and_partitions() const;
+
     OwnPtr<PartitionTable> try_to_initialize_partition_table(const StorageDevice&) const;
 
     RefPtr<BlockDevice> boot_block_device() const;