igb: modify register test for i350 to reflect read only bits in RDLEN/TDLEN

The registers for RDLEN/TDLEN on i350 have the first 7 bits as read only.
This is a change from previous hardware in which it was only the first 4
bits that were read only.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/igb/igb_ethtool.c

@@ -910,10 +910,10 @@ static struct igb_reg_test reg_test_i350[] = {
 	{ E1000_VET,	   0x100, 1,  PATTERN_TEST, 0xFFFF0000, 0xFFFF0000 },
 	{ E1000_RDBAL(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
 	{ E1000_RDBAH(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
-	{ E1000_RDLEN(0),  0x100, 4,  PATTERN_TEST, 0x000FFFF0, 0x000FFFFF },
+	{ E1000_RDLEN(0),  0x100, 4,  PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
 	{ E1000_RDBAL(4),  0x40,  4,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
 	{ E1000_RDBAH(4),  0x40,  4,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
-	{ E1000_RDLEN(4),  0x40,  4,  PATTERN_TEST, 0x000FFFF0, 0x000FFFFF },
+	{ E1000_RDLEN(4),  0x40,  4,  PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
 	/* RDH is read-only for i350, only test RDT. */
 	{ E1000_RDT(0),	   0x100, 4,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
 	{ E1000_RDT(4),	   0x40,  4,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
@@ -922,10 +922,10 @@ static struct igb_reg_test reg_test_i350[] = {
 	{ E1000_TIPG,	   0x100, 1,  PATTERN_TEST, 0x3FFFFFFF, 0x3FFFFFFF },
 	{ E1000_TDBAL(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
 	{ E1000_TDBAH(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
-	{ E1000_TDLEN(0),  0x100, 4,  PATTERN_TEST, 0x000FFFF0, 0x000FFFFF },
+	{ E1000_TDLEN(0),  0x100, 4,  PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
 	{ E1000_TDBAL(4),  0x40,  4,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
 	{ E1000_TDBAH(4),  0x40,  4,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
-	{ E1000_TDLEN(4),  0x40,  4,  PATTERN_TEST, 0x000FFFF0, 0x000FFFFF },
+	{ E1000_TDLEN(4),  0x40,  4,  PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
 	{ E1000_TDT(0),	   0x100, 4,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
 	{ E1000_TDT(4),	   0x40,  4,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
 	{ E1000_RCTL,	   0x100, 1,  SET_READ_TEST, 0xFFFFFFFF, 0x00000000 },