arm: mx6: Change defines ENET_xxMHz to ENET_xxMHZ (no CamelCase)

As checkpatch complaines about these camel-case defines, lets change
them to only use upper-case characters.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Jon Nettleton <jon.nettleton@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
diff --git a/board/freescale/mx6sxsabresd/mx6sxsabresd.c b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
index 7aee074..8b959b9 100644
--- a/board/freescale/mx6sxsabresd/mx6sxsabresd.c
+++ b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
@@ -168,7 +168,7 @@
 	reg |= BM_ANADIG_PLL_ENET_REF_25M_ENABLE;
 	writel(reg, &anatop->pll_enet);
 
-	return enable_fec_anatop_clock(ENET_125MHz);
+	return enable_fec_anatop_clock(ENET_125MHZ);
 }
 
 int board_eth_init(bd_t *bis)