staging/lustre: drop CONFIG_BROKEN

This reverts commit 0ad1ea69

I didn't use git revert because it can not be done cleanly.
Hopefully it will be the last time we do it...

Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NPeng Tao <bergwolf@gmail.com>
Signed-off-by: NAndreas Dilger <andreas.dilger@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/Kconfig

 config LUSTRE_FS
 	tristate "Lustre file system client support"
-	depends on STAGING && INET && m && BROKEN
+	depends on STAGING && INET && m
 	select LNET
 	select CRYPTO
 	select CRYPTO_CRC32