Fix trim-related issues

Fixes:
* Use uint64 instead of off_t when handling offset and size
  of the trimmed range in the fs_trim_data structure
* BlockAllocator::Trim: Correct the size of a buffer
* ram_disk, mmc: Do not trim past device capacity

Improvements:
* BlockAllocator::Trim: Because the received offset and size
  are ignored by BFS (the functionality is not implemented yet),
  return B_UNSUPPORTED if the range does not cover the whole
  partition
* ram_disk, mmc: More accurate calculation of the number
  of trimmed bytes
* devfs: Add a uint64 version of translate_partition_access()

Change-Id: I24f4c08674f123ad33a5fef6e28996a4ada6ff0d
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4155
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: Adrien Destugues <[email protected]>

headers/private/kernel/util/fs_trim_support.h

@@ -64,7 +64,7 @@ copy_trim_data_to_user(void* buffer, fs_trim_data* trimData)
 		return B_BAD_ADDRESS;
 
 	// Do not copy any ranges
-	return user_memcpy(buffer, trimData, sizeof(uint64) * 2);
+	return user_memcpy(buffer, trimData, offsetof(fs_trim_data, ranges));
 }