Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/scsi/53c700.scr b/drivers/scsi/53c700.scr
index a064a09..ec822e3 100644
--- a/drivers/scsi/53c700.scr
+++ b/drivers/scsi/53c700.scr
@@ -31,7 +31,7 @@
 ABSOLUTE	ReceiveMsgAddress = 0	; Addr to receive msg
 ;
 ; This is the magic component for handling scatter-gather.  Each of the
-; SG components is preceeded by a script fragment which moves the
+; SG components is preceded by a script fragment which moves the
 ; necessary amount of data and jumps to the next SG segment.  The final
 ; SG segment jumps back to .  However, this address is the first SG script
 ; segment.