net: ethernet: Use existing define with polynomial

Do not define again the polynomial but use header with existing define.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/net/ethernet/synopsys/dwc-xlgmac-hw.c b/drivers/net/ethernet/synopsys/dwc-xlgmac-hw.c
index 458a784..99d86e3 100644
--- a/drivers/net/ethernet/synopsys/dwc-xlgmac-hw.c
+++ b/drivers/net/ethernet/synopsys/dwc-xlgmac-hw.c
@@ -20,6 +20,7 @@
 #include <linux/clk.h>
 #include <linux/bitrev.h>
 #include <linux/crc32.h>
+#include <linux/crc32poly.h>
 #include <linux/dcbnl.h>
 
 #include "dwc-xlgmac.h"
@@ -193,7 +194,6 @@
 {
 	unsigned char *data = (unsigned char *)&vid_le;
 	unsigned char data_byte = 0;
-	u32 poly = 0xedb88320;
 	u32 crc = ~0;
 	u32 temp = 0;
 	int i, bits;
@@ -208,7 +208,7 @@
 		data_byte >>= 1;
 
 		if (temp)
-			crc ^= poly;
+			crc ^= CRC32_POLY_LE;
 	}
 
 	return crc;