soc/amd/stoneyridge: Remove "\t" from name table

Remove "\t" from name strings in soc/amd/stoneyridge/southbridge.c array
irq_association[], and change the print string in soc/amd/common/amd_pci_util.c
that use the names from "%s" to "%-20s". This sets a fixed field of 20
characters for the string name, allowing for variable length to the names
(up to 20 characters), thus saving memory space used by the strings.

BUG=b:70344551
TEST=Build and boot, record output of irq routing and verify alignment.

Change-Id: I92dfac9b64932fb0cd3359abd4d1aac651535f1a
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/22785
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/soc/amd/common/block/pci/amd_pci_util.c b/src/soc/amd/common/block/pci/amd_pci_util.c
index d30adf4..c5659cb 100644
--- a/src/soc/amd/common/block/pci/amd_pci_util.c
+++ b/src/soc/amd/common/block/pci/amd_pci_util.c
@@ -70,7 +70,7 @@
 	/* PIC IRQ routine */
 	printk(BIOS_DEBUG, "PCI_INTR tables: Writing registers C00/C01 for"
 				" PCI IRQ routing:\n"
-				"\tPCI_INTR_INDEX\t\tPIC mode"
+				"PCI_INTR_INDEX\tname\t\t     PIC mode"
 				"\tAPIC mode\n");
 	/*
 	 * Iterate table idx_name, indexes outside the table are ignored
@@ -81,7 +81,7 @@
 	for (i = 0 ; i < limit; i++) {
 		byte = idx_name[i].index;
 		write_pci_int_idx(byte, 0, (u8) picr_data_ptr[byte]);
-		printk(BIOS_DEBUG, "\t0x%02X %s\t0x%02X\t\t",
+		printk(BIOS_DEBUG, "0x%02X\t\t%-20s 0x%02X\t",
 				byte, idx_name[i].name,
 				read_pci_int_idx(byte, 0));
 		write_pci_int_idx(byte, 1, (u8) intr_data_ptr[byte]);