treewide: replace with error() with pr_err()

U-Boot widely uses error() as a bit noisier variant of printf().

This macro causes name conflict with the following line in
include/linux/compiler-gcc.h:

  # define __compiletime_error(message) __attribute__((error(message)))

This prevents us from using __compiletime_error(), and makes it
difficult to fully sync BUILD_BUG macros with Linux.  (Notice
Linux's BUILD_BUG_ON_MSG is implemented by using compiletime_assert().)

Let's convert error() into now treewide-available pr_err().

Done with the help of Coccinelle, excluing tools/ directory.

The semantic patch I used is as follows:

// <smpl>
@@@@
-error
+pr_err
 (...)
// </smpl>

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Re-run Coccinelle]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/disk/part_efi.c b/disk/part_efi.c
index 208bb14..0abf487 100644
--- a/disk/part_efi.c
+++ b/disk/part_efi.c
@@ -360,7 +360,7 @@
 
 	/* Read MBR to backup boot code if it exists */
 	if (blk_dread(dev_desc, 0, 1, p_mbr) != 1) {
-		error("** Can't read from device %d **\n", dev_desc->devnum);
+		pr_err("** Can't read from device %d **\n", dev_desc->devnum);
 		return -1;
 	}
 
@@ -716,7 +716,7 @@
 
 	for (i = 0; i < parts; i++) {
 		if (i == gpt_head->num_partition_entries) {
-			error("More partitions than allowed!\n");
+			pr_err("More partitions than allowed!\n");
 			return -1;
 		}
 
@@ -729,7 +729,7 @@
 
 		if (strncmp(efi_str, (char *)partitions[i].name,
 			    sizeof(partitions->name))) {
-			error("Partition name: %s does not match %s!\n",
+			pr_err("Partition name: %s does not match %s!\n",
 			      efi_str, (char *)partitions[i].name);
 			return -1;
 		}
@@ -746,7 +746,7 @@
 			if ((i == parts - 1) && (partitions[i].size == 0))
 				continue;
 
-			error("Partition %s size: %llu does not match %llu!\n",
+			pr_err("Partition %s size: %llu does not match %llu!\n",
 			      efi_str, (unsigned long long)gpt_part_size,
 			      (unsigned long long)partitions[i].size);
 			return -1;
@@ -767,7 +767,7 @@
 		      (unsigned long long)partitions[i].start);
 
 		if (le64_to_cpu(gpt_e[i].starting_lba) != partitions[i].start) {
-			error("Partition %s start: %llu does not match %llu!\n",
+			pr_err("Partition %s start: %llu does not match %llu!\n",
 			      efi_str, le64_to_cpu(gpt_e[i].starting_lba),
 			      (unsigned long long)partitions[i].start);
 			return -1;