mxc nand: Let driver detect IP revision

There is no reason to have board configs to select the NFC IP revision. Just let
the driver detect it. BTW, remove broken NFC IP revision configs from board
config files.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
Signed-off-by: Scott Wood <scottwood@freescale.com>

include/configs/flea3.h

@@ -213,7 +213,6 @@
  * NAND FLASH driver setup
  */
 #define CONFIG_NAND_MXC
-#define CONFIG_NAND_MXC_V1_1
 #define CONFIG_MXC_NAND_REGS_BASE	(NFC_BASE_ADDR)
 #define CONFIG_SYS_MAX_NAND_DEVICE	1
 #define CONFIG_SYS_NAND_BASE		(NFC_BASE_ADDR)

include/configs/mx35pdk.h

@@ -231,7 +231,6 @@
  * NAND FLASH driver setup
  */
 #define CONFIG_NAND_MXC
-#define CONFIG_NAND_MXC_V1_1
 #define CONFIG_MXC_NAND_REGS_BASE	(NFC_BASE_ADDR)
 #define CONFIG_SYS_MAX_NAND_DEVICE	1
 #define CONFIG_SYS_NAND_BASE		(NFC_BASE_ADDR)

include/configs/tx25.h

@@ -107,7 +107,6 @@
 
 /* NAND */
 #define CONFIG_NAND_MXC
-#define CONFIG_NAND_MXC_V1_1
 #define CONFIG_MXC_NAND_REGS_BASE	(0xBB000000)
 #define CONFIG_SYS_MAX_NAND_DEVICE	1
 #define CONFIG_SYS_NAND_BASE		(0xBB000000)

include/fsl_nfc.h

@@ -42,10 +42,12 @@
  */
 #if defined(CONFIG_MX27) || defined(CONFIG_MX31)
 #define MXC_NFC_V1
+#define is_mxc_nfc_11()		0
 #elif defined(CONFIG_MX25) || defined(CONFIG_MX35)
 #define MXC_NFC_V1_1
+#define is_mxc_nfc_11()		1
 #else
-#warning "MXC NFC version not defined"
+#error "MXC NFC implementation not supported"
 #endif
 
 #if defined(MXC_NFC_V1)
@@ -53,14 +55,10 @@
 #define NAND_MXC_SPARE_BUF_SIZE		16
 #define NAND_MXC_REG_OFFSET		0xe00
 #define NAND_MXC_2K_MULTI_CYCLE
-#define is_mxc_nfc_11()			0
 #elif defined(MXC_NFC_V1_1)
 #define NAND_MXC_NR_BUFS		8
 #define NAND_MXC_SPARE_BUF_SIZE		64
 #define NAND_MXC_REG_OFFSET		0x1e00
-#define is_mxc_nfc_11()			1
-#else
-#error "define CONFIG_NAND_MXC_VXXX to use the mxc nand driver"
 #endif
 
 struct fsl_nfc_regs {