Blackfin arch: update default kernel configuration

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

diff --git a/arch/blackfin/configs/BlackStamp_defconfig b/arch/blackfin/configs/BlackStamp_defconfig
index 017c6ea..ef1a2c8 100644
--- a/arch/blackfin/configs/BlackStamp_defconfig
+++ b/arch/blackfin/configs/BlackStamp_defconfig
@@ -43,7 +43,7 @@
 CONFIG_BLK_DEV_INITRD=y
 CONFIG_INITRAMFS_SOURCE=""
 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
-CONFIG_SYSCTL=y
+# CONFIG_SYSCTL is not set
 CONFIG_EMBEDDED=y
 CONFIG_UID16=y
 CONFIG_SYSCTL_SYSCALL=y
@@ -56,7 +56,7 @@
 # CONFIG_ELF_CORE is not set
 CONFIG_COMPAT_BRK=y
 CONFIG_BASE_FULL=y
-CONFIG_FUTEX=y
+# CONFIG_FUTEX is not set
 CONFIG_ANON_INODES=y
 CONFIG_EPOLL=y
 CONFIG_SIGNALFD=y