EXFAT bump version to 1.2.6 big update by @benpicco @mdcasey @lqs

All changes came from here

https://github.com/benpicco/linux_exfat-staging/commits/exfat
https://github.com/mdcasey/linux_exfat-staging/commits/mdcasey
dorimanx@d20735c
dorimanx@c875227
dorimanx@e03f725

HUGE thanks to developers that made such hard work on cleaning and fixing
the code for all of exfat users :)

Great work people!

Kconfig

@@ -1,19 +1,39 @@
 config EXFAT_FS
-	tristate "exFAT filesystem support"
+	tristate "exFAT fs support"
 	select NLS
 	help
-	  exFAT driver from Samsung
+	  This adds support for the exFAT file system.
+
+config EXFAT_DISCARD
+	bool "enable discard support"
+	depends on EXFAT_FS
+	default y
+
+config EXFAT_DELAYED_SYNC
+	bool "enable delayed sync"
+	depends on EXFAT_FS
+	default n
+
+config EXFAT_KERNEL_DEBUG
+	bool "enable kernel debug features via ioctl"
+	depends on EXFAT_FS
+	default n
+
+config EXFAT_DEBUG_MSG
+	bool "print debug messages"
+	depends on EXFAT_FS
+	default n
 
 config EXFAT_DEFAULT_CODEPAGE
 	int "Default codepage for exFAT"
-	depends on EXFAT_FS
 	default 437
+	depends on EXFAT_FS
 	help
 	  This option should be set to the codepage of your exFAT filesystems.
 
 config EXFAT_DEFAULT_IOCHARSET
 	string "Default iocharset for exFAT"
-	depends on EXFAT_FS
 	default "utf8"
+	depends on EXFAT_FS
 	help
 	  Set this to the default input/output character set you'd like exFAT to use.

Makefile

@@ -1,4 +1,8 @@
+#
+# Makefile for the Linux fat filesystem support.
+#
+
 obj-$(CONFIG_EXFAT_FS) += exfat.o
 
-exfat-y := exfat_core.o exfat_api.o exfat_blkdev.o exfat_cache.o exfat_super.o \
-	   exfat_data.o exfat_global.o exfat_nls.o exfat_oal.o exfat_upcase.o
+exfat-y	:= exfat_core.o exfat_super.o exfat_api.o exfat_blkdev.o exfat_cache.o \
+			   exfat_data.o exfat_bitmap.o exfat_nls.o exfat_oal.o exfat_upcase.o