s390/ipl: make ipl_info less confusing

The ipl_info union in struct ipl_parameter_block has the same name as
the struct ipl_info. This does not help while reading the code and the
union in struct ipl_parameter_block does not need to be named. Drop
the name from the union.

Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/include/asm/ipl.h

@@ -78,7 +78,7 @@ struct ipl_parameter_block {
 		struct ipl_block_fcp fcp;
 		struct ipl_block_ccw ccw;
 		char raw[PAGE_SIZE - sizeof(struct ipl_list_hdr)];
-	} ipl_info;
+	};
 } __packed __aligned(PAGE_SIZE);
 
 struct save_area;