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/lib/cbmem_stage_cache.c b/src/lib/cbmem_stage_cache.c
index 28cc242..b45c950 100644
--- a/src/lib/cbmem_stage_cache.c
+++ b/src/lib/cbmem_stage_cache.c
@@ -13,7 +13,7 @@
 
 	meta = cbmem_add(CBMEM_ID_STAGEx_META + stage_id, sizeof(*meta));
 	if (meta == NULL) {
-		printk(BIOS_ERR, "Error: Can't add %x metadata to cbmem\n",
+		printk(BIOS_ERR, "Can't add %x metadata to cbmem\n",
 				CBMEM_ID_STAGEx_META + stage_id);
 		return;
 	}
@@ -23,7 +23,7 @@
 
 	c = cbmem_add(CBMEM_ID_STAGEx_CACHE + stage_id, prog_size(stage));
 	if (c == NULL) {
-		printk(BIOS_ERR, "Error: Can't add stage_cache %x to cbmem\n",
+		printk(BIOS_ERR, "Can't add stage_cache %x to cbmem\n",
 				CBMEM_ID_STAGEx_CACHE + stage_id);
 		return;
 	}
@@ -51,7 +51,7 @@
 
 	e = cbmem_entry_find(CBMEM_ID_STAGEx_RAW + stage_id);
 	if (e == NULL) {
-		printk(BIOS_ERR, "Error: Can't find raw %x data in cbmem\n",
+		printk(BIOS_ERR, "Can't find raw %x data in cbmem\n",
 				CBMEM_ID_STAGEx_RAW + stage_id);
 		return;
 	}
@@ -72,7 +72,7 @@
 
 	meta = cbmem_find(CBMEM_ID_STAGEx_META + stage_id);
 	if (meta == NULL) {
-		printk(BIOS_ERR, "Error: Can't find %x metadata in cbmem\n",
+		printk(BIOS_ERR, "Can't find %x metadata in cbmem\n",
 				CBMEM_ID_STAGEx_META + stage_id);
 		return;
 	}
@@ -80,7 +80,7 @@
 	e = cbmem_entry_find(CBMEM_ID_STAGEx_CACHE + stage_id);
 
 	if (e == NULL) {
-		printk(BIOS_ERR, "Error: Can't find stage_cache %x in cbmem\n",
+		printk(BIOS_ERR, "Can't find stage_cache %x in cbmem\n",
 				CBMEM_ID_STAGEx_CACHE + stage_id);
 		return;
 	}