trivial: Fix misspelling of firmware

Fix misspelling of firmware.

Signed-off-by: Nick Andrew <nick@nick-andrew.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/sound/oss/pss.c b/sound/oss/pss.c
index 16517a5..83f5ee2 100644
--- a/sound/oss/pss.c
+++ b/sound/oss/pss.c
@@ -46,7 +46,7 @@
  *          load the driver as it did in previous versions.
  * 04-07-1999: Anthony Barbachan <barbcode@xmen.cis.fordham.edu>
  *          Added module parameter pss_firmware to allow the user to tell 
- *          the driver where the fireware file is located.  The default 
+ *          the driver where the firmware file is located.  The default 
  *          setting is the previous hardcoded setting "/etc/sound/pss_synth".
  * 00-03-03: Christoph Hellwig <chhellwig@infradead.org>
  *	    Adapted to module_init/module_exit