treewide: Remove "ERROR: "/"WARN: " prefixes from log messages

Now that the console system itself will clearly differentiate loglevels,
it is no longer necessary to explicitly add "ERROR: " in front of every
BIOS_ERR message to help it stand out more (and allow automated tooling
to grep for it). Removing all these extra .rodata characters should save
us a nice little amount of binary size.

This patch was created by running

  find src/ -type f -exec perl -0777 -pi -e 's/printk\(\s*BIOS_ERR,\s*"ERROR: /printk\(BIOS_ERR, "/gi' '{}' ';'

and doing some cursory review/cleanup on the result. Then doing the same
thing for BIOS_WARN with

  's/printk\(\s*BIOS_WARNING,\s*"WARN(ING)?: /printk\(BIOS_WARNING, "/gi'

Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: I3d0573acb23d2df53db6813cb1a5fc31b5357db8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61309
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Lance Zhao
Reviewed-by: Jason Glenesk <jason.glenesk@gmail.com>
diff --git a/src/drivers/vpd/vpd.c b/src/drivers/vpd/vpd.c
index a099b3b..396097c 100644
--- a/src/drivers/vpd/vpd.c
+++ b/src/drivers/vpd/vpd.c
@@ -67,7 +67,7 @@
 
 	/* Try if we can find a google_vpd_info, otherwise read whole VPD. */
 	if (rdev_readat(rdev, &info, 0, sizeof(info)) != sizeof(info)) {
-		printk(BIOS_ERR, "ERROR: Failed to read %s header.\n",
+		printk(BIOS_ERR, "Failed to read %s header.\n",
 		       fmap_name);
 		goto fail;
 	}
@@ -75,13 +75,13 @@
 	if (memcmp(info.header.magic, VPD_INFO_MAGIC, sizeof(info.header.magic))
 	    == 0) {
 		if (rdev_chain(rdev, rdev, sizeof(info), info.size)) {
-			printk(BIOS_ERR, "ERROR: %s info size too large.\n",
+			printk(BIOS_ERR, "%s info size too large.\n",
 			       fmap_name);
 			goto fail;
 		}
 	} else if (info.header.tlv.type == VPD_TYPE_TERMINATOR ||
 		   info.header.tlv.type == VPD_TYPE_IMPLICIT_TERMINATOR) {
-		printk(BIOS_WARNING, "WARNING: %s is uninitialized or empty.\n",
+		printk(BIOS_WARNING, "%s is uninitialized or empty.\n",
 		       fmap_name);
 		goto fail;
 	}
@@ -151,7 +151,7 @@
 
 	if (ro_size) {
 		if (rdev_readat(&ro_vpd, cbmem->blob, 0, ro_size) != ro_size) {
-			printk(BIOS_ERR, "ERROR: Couldn't read RO VPD\n");
+			printk(BIOS_ERR, "Couldn't read RO VPD\n");
 			cbmem->ro_size = ro_size = 0;
 		}
 		timestamp_add_now(TS_END_COPYVPD_RO);
@@ -160,7 +160,7 @@
 	if (rw_size) {
 		if (rdev_readat(&rw_vpd, cbmem->blob + ro_size, 0, rw_size)
 								 != rw_size) {
-			printk(BIOS_ERR, "ERROR: Couldn't read RW VPD\n");
+			printk(BIOS_ERR, "Couldn't read RW VPD\n");
 			cbmem->rw_size = rw_size = 0;
 		}
 		timestamp_add_now(TS_END_COPYVPD_RW);