device/pci_rom.c: Use __func__

Change-Id: I24c40d511eeaa5073acd2b47b20b4ec2f85bb69e
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49545
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by:  Felix Singer <felixsinger@posteo.net>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
diff --git a/src/device/pci_rom.c b/src/device/pci_rom.c
index 4224c65..9445243 100644
--- a/src/device/pci_rom.c
+++ b/src/device/pci_rom.c
@@ -207,7 +207,7 @@
 	if (!rom)
 		rom = pci_rom_probe(device);
 	if (!rom) {
-		printk(BIOS_ERR, "pci_rom_acpi_fill_vfct failed\n");
+		printk(BIOS_ERR, "%s failed\n", __func__);
 		return current;
 	}