pci: Fix showing registers

Header type is 7-bit number so use all 7 bits when detecting header type
and not only 2 bits.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/cmd/pci.c b/cmd/pci.c
index 4a82854d..3b1863f 100644
--- a/cmd/pci.c
+++ b/cmd/pci.c
@@ -239,7 +239,7 @@
 	       pci_class_str(class));
 	pci_show_regs(dev, regs_rest);
 
-	switch (header_type & 0x03) {
+	switch (header_type & 0x7f) {
 	case PCI_HEADER_TYPE_NORMAL:	/* "normal" PCI device */
 		pci_show_regs(dev, regs_normal);
 		break;