treewide: Fix comment and string typo 'bufer'

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/scsi/gdth.h b/drivers/scsi/gdth.h
index d969855..d3e4d7c 100644
--- a/drivers/scsi/gdth.h
+++ b/drivers/scsi/gdth.h
@@ -359,7 +359,7 @@
     u32     cmd_buff_addr2;     /* physical address of cmd buffer 1 */   
     u32     cmd_buff_u_addr2;   /* reserved for 64 bit addressing */
     u32     cmd_buff_indx2;     /* cmd buf addr1 unique identifier */
-    u32     cmd_buff_size;      /* size of each cmd bufer in bytes */
+    u32     cmd_buff_size;      /* size of each cmd buffer in bytes */
     u32     reserved1;
     u32     reserved2;
 } __attribute__((packed)) gdth_perf_modes;