MIPS: pci: Remove KERN_WARN instance inside the mt7620 driver

commit 8593b18a upstream.

Switch the printk() call to the prefered pr_warn() api.

Fixes: 7e5873d3 ("MIPS: pci: Add MT7620a PCIE driver")
Signed-off-by: John Crispin <john@phrozen.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15321/Signed-off-by: James Hogan <jhogan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arch/mips/pci/pci-mt7620.c

@@ -121,7 +121,7 @@ static int wait_pciephy_busy(void)
 		else
 			break;
 		if (retry++ > WAITRETRY_MAX) {
-			printk(KERN_WARN "PCIE-PHY retry failed.\n");
+			pr_warn("PCIE-PHY retry failed.\n");
 			return -1;
 		}
 	}