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/soc/amd/common/block/apob/apob_cache.c b/src/soc/amd/common/block/apob/apob_cache.c
index d538207..bdacd81 100644
--- a/src/soc/amd/common/block/apob/apob_cache.c
+++ b/src/soc/amd/common/block/apob/apob_cache.c
@@ -67,7 +67,7 @@
 static int get_nv_rdev(struct region_device *r)
 {
 	if  (fmap_locate_area_as_rdev(DEFAULT_MRC_CACHE, r) < 0) {
-		printk(BIOS_ERR, "Error: No APOB NV region is found in flash\n");
+		printk(BIOS_ERR, "No APOB NV region is found in flash\n");
 		return -1;
 	}
 
@@ -180,7 +180,7 @@
 		region_device_offset(&read_rdev), region_device_sz(&read_rdev));
 
 	if  (fmap_locate_area_as_rdev_rw(DEFAULT_MRC_CACHE, &write_rdev) < 0) {
-		printk(BIOS_ERR, "Error: No RW APOB NV region is found in flash\n");
+		printk(BIOS_ERR, "No RW APOB NV region is found in flash\n");
 		return;
 	}
 
@@ -188,14 +188,14 @@
 
 	/* write data to flash region */
 	if (rdev_eraseat(&write_rdev, 0, DEFAULT_MRC_CACHE_SIZE) < 0) {
-		printk(BIOS_ERR, "Error: APOB flash region erase failed\n");
+		printk(BIOS_ERR, "APOB flash region erase failed\n");
 		return;
 	}
 
 	timestamp_add_now(TS_AMD_APOB_WRITE_START);
 
 	if (rdev_writeat(&write_rdev, apob_src_ram, 0, apob_src_ram->size) < 0) {
-		printk(BIOS_ERR, "Error: APOB flash region update failed\n");
+		printk(BIOS_ERR, "APOB flash region update failed\n");
 		return;
 	}