mtd, ubi, ubifs: resync with Linux-3.14

resync ubi subsystem with linux:

commit 455c6fdbd219161bd09b1165f11699d6d73de11c
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Sun Mar 30 20:40:15 2014 -0700

    Linux 3.14

A nice side effect of this, is we introduce UBI Fastmap support
to U-Boot.

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Tom Rini <trini@ti.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Sergey Lapin <slapin@ossfans.org>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Joerg Krause <jkrause@posteo.de>
diff --git a/board/prodrive/alpr/nand.c b/board/prodrive/alpr/nand.c
index 50e8d82..5427de5 100644
--- a/board/prodrive/alpr/nand.c
+++ b/board/prodrive/alpr/nand.c
@@ -93,6 +93,7 @@
 	}
 }
 
+#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
 static int alpr_nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
 {
 	int i;
@@ -103,6 +104,7 @@
 
 	return 0;
 }
+#endif
 
 static int alpr_nand_dev_ready(struct mtd_info *mtd)
 {
@@ -128,7 +130,9 @@
 	nand->read_byte  = alpr_nand_read_byte;
 	nand->write_buf  = alpr_nand_write_buf;
 	nand->read_buf   = alpr_nand_read_buf;
+#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
 	nand->verify_buf = alpr_nand_verify_buf;
+#endif
 	nand->dev_ready  = alpr_nand_dev_ready;
 
 	return 0;
diff --git a/board/socrates/nand.c b/board/socrates/nand.c
index 3802c7e..7394478 100644
--- a/board/socrates/nand.c
+++ b/board/socrates/nand.c
@@ -18,7 +18,9 @@
 static u_char sc_nand_read_byte(struct mtd_info *mtd);
 static u16 sc_nand_read_word(struct mtd_info *mtd);
 static void sc_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len);
+#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
 static int sc_nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len);
+#endif
 static int sc_nand_device_ready(struct mtd_info *mtdinfo);
 
 #define FPGA_NAND_CMD_MASK		(0x7 << 28)
@@ -100,6 +102,7 @@
 	}
 }
 
+#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
 /**
  * sc_nand_verify_buf -  Verify chip data against buffer
  * @mtd:	MTD device structure
@@ -116,6 +119,7 @@
 	}
 	return 0;
 }
+#endif
 
 /**
  * sc_nand_device_ready - Check the NAND device is ready for next command.
@@ -174,7 +178,9 @@
 	nand->read_word = sc_nand_read_word;
 	nand->write_buf = sc_nand_write_buf;
 	nand->read_buf = sc_nand_read_buf;
+#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
 	nand->verify_buf = sc_nand_verify_buf;
+#endif
 
 	return 0;
 }
diff --git a/board/tqc/tqm8272/nand.c b/board/tqc/tqm8272/nand.c
index 4925b8d..7fb2dfa 100644
--- a/board/tqc/tqm8272/nand.c
+++ b/board/tqc/tqm8272/nand.c
@@ -188,6 +188,7 @@
 		*base = buf[i];
 }
 
+#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
 static int tqm8272_verify_buf(struct mtd_info *mtdinfo, const uint8_t *buf, int len)
 {
 	struct nand_chip *this = mtdinfo->priv;
@@ -199,6 +200,7 @@
 			return -1;
 	return 0;
 }
+#endif
 #endif /* #ifndef CONFIG_NAND_SPL */
 
 void board_nand_select_device(struct nand_chip *nand, int chip)
@@ -247,8 +249,10 @@
 #ifndef CONFIG_NAND_SPL
 	nand->write_buf	 = tqm8272_write_buf;
 	nand->read_buf	 = tqm8272_read_buf;
+#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
 	nand->verify_buf = tqm8272_verify_buf;
 #endif
+#endif
 
 	/*
 	 * Select required NAND chip