Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/net/tehuti.h b/drivers/net/tehuti.h
index b6ba860..c5642fe 100644
--- a/drivers/net/tehuti.h
+++ b/drivers/net/tehuti.h
@@ -502,7 +502,7 @@
 #define  GMAC_RX_FILTER_ACRC  0x0010	/* accept crc error */
 #define  GMAC_RX_FILTER_AM    0x0008	/* accept multicast */
 #define  GMAC_RX_FILTER_AB    0x0004	/* accept broadcast */
-#define  GMAC_RX_FILTER_PRM   0x0001	/* [0:1] promiscous mode */
+#define  GMAC_RX_FILTER_PRM   0x0001	/* [0:1] promiscuous mode */
 
 #define  MAX_FRAME_AB_VAL       0x3fff	/* 13:0 */