net: stmmac: dwmac-visconti: Fix value of ETHER_CLK_SEL_FREQ_SEL_2P5M

ETHER_CLK_SEL_FREQ_SEL_2P5M is not 0 bit of the register. This is a
value, which is 0. Fix from BIT(0) to 0.
Reported-by: Yuji Ishikawa <yuji2.ishikawa@toshiba.co.jp>
Fixes: b38dd98f ("net: stmmac: Add Toshiba Visconti SoCs glue driver")
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Link: https://lore.kernel.org/r/20211223073633.101306-1-nobuhiro1.iwamatsu@toshiba.co.jpSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c

@@ -26,7 +26,7 @@
 #define ETHER_CLK_SEL_FREQ_SEL_125M	(BIT(9) | BIT(8))
 #define ETHER_CLK_SEL_FREQ_SEL_50M	BIT(9)
 #define ETHER_CLK_SEL_FREQ_SEL_25M	BIT(8)
-#define ETHER_CLK_SEL_FREQ_SEL_2P5M	BIT(0)
+#define ETHER_CLK_SEL_FREQ_SEL_2P5M	0
 #define ETHER_CLK_SEL_TX_CLK_EXT_SEL_IN BIT(0)
 #define ETHER_CLK_SEL_TX_CLK_EXT_SEL_TXC BIT(10)
 #define ETHER_CLK_SEL_TX_CLK_EXT_SEL_DIV BIT(11)