Fix several typos in drivers/

Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 731c3d5..88f4621 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -64,7 +64,7 @@
 	help
 	 Say m if you want to have the option of updating the BIOS for your
 	 DELL system. Note you need a Dell OpenManage or Dell Update package (DUP)
-	 supporting application to comunicate with the BIOS regarding the new
+	 supporting application to communicate with the BIOS regarding the new
 	 image for the image update to take effect.
 	 See <file:Documentation/dell_rbu.txt> for more details on the driver.