ixgbe: Fix && vs || typo

"offset" can't be both 0x0 and 0xFFFF so presumably || was intended
instead of &&.  That matches with how this check is done in other
functions.

Fixes: 73834aec7199 ("ixgbe: extend firmware version support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/ixgbe/ixgbe_common.c

@@ -4087,7 +4087,7 @@ void ixgbe_get_oem_prod_version(struct ixgbe_hw *hw,
 	hw->eeprom.ops.read(hw, NVM_OEM_PROD_VER_PTR, &offset);
 
 	/* Return is offset to OEM Product Version block is invalid */
-	if (offset == 0x0 && offset == NVM_INVALID_PTR)
+	if (offset == 0x0 || offset == NVM_INVALID_PTR)
 		return;
 
 	/* Read product version block */