Fix misc .c/.h comment typos

Fix various .c/.h typos in comments (no code changes).

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/drivers/scsi/ncr53c8xx.h b/drivers/scsi/ncr53c8xx.h
index cb8b770..b39357d 100644
--- a/drivers/scsi/ncr53c8xx.h
+++ b/drivers/scsi/ncr53c8xx.h
@@ -218,7 +218,7 @@
 **	Same as option 1, but also deal with 
 **	misconfigured interrupts.
 **
-**	- Edge triggerred instead of level sensitive.
+**	- Edge triggered instead of level sensitive.
 **	- No interrupt line connected.
 **	- IRQ number misconfigured.
 **	
@@ -549,7 +549,7 @@
 
 /*
 **	Initial setup.
-**	Can be overriden at startup by a command line.
+**	Can be overridden at startup by a command line.
 */
 #define SCSI_NCR_DRIVER_SETUP			\
 {						\
@@ -1093,7 +1093,7 @@
 **-----------------------------------------------------------
 **	On 810A, 860, 825A, 875, 895 and 896 chips the content 
 **	of SFBR register can be used as data (SCR_SFBR_DATA).
-**	The 896 has additionnal IO registers starting at 
+**	The 896 has additional IO registers starting at 
 **	offset 0x80. Bit 7 of register offset is stored in 
 **	bit 7 of the SCRIPTS instruction first DWORD.
 **-----------------------------------------------------------