phy: xgene: remove unsigned integer comparison with less than zero

We get warning with W=1 build:
drivers/phy/phy-xgene.c: In function ‘xgene_phy_xlate’:
drivers/phy/phy-xgene.c:1618:20: warning: comparison of unsigned
expression in ‘< 0’ is always false [-Wtype-limits]
1618 | if (args->args[0] < MODE_SATA || args->args[0] >= MODE_MAX) |

args is uint32_t so can never be less than zero, so remove this check

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/phy/phy-xgene.c

···
 
 	if (args->args_count <= 0)
 		return ERR_PTR(-EINVAL);
-	if (args->args[0] < MODE_SATA || args->args[0] >= MODE_MAX)
+	if (args->args[0] >= MODE_MAX)
 		return ERR_PTR(-EINVAL);
 
 	ctx->mode = args->args[0];