drivers/char/: Spelling fixes

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
diff --git a/drivers/char/drm/r300_reg.h b/drivers/char/drm/r300_reg.h
index 3ae57ec..fa194a4 100644
--- a/drivers/char/drm/r300_reg.h
+++ b/drivers/char/drm/r300_reg.h
@@ -584,7 +584,7 @@
 #define R300_RE_FOG_START                     0x4298
 
 /* Not sure why there are duplicate of factor and constant values.
- * My best guess so far is that there are seperate zbiases for test and write.
+ * My best guess so far is that there are separate zbiases for test and write.
  * Ordering might be wrong.
  * Some of the tests indicate that fgl has a fallback implementation of zbias
  * via pixel shaders.