regularize options which control size/speed trade

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/configs/android2_defconfig b/configs/android2_defconfig
index 338c7b1..b5166e0 100644
--- a/configs/android2_defconfig
+++ b/configs/android2_defconfig
@@ -92,7 +92,7 @@
 # CONFIG_FEATURE_SYSTEMD is not set
 # CONFIG_FEATURE_RTMINMAX is not set
 CONFIG_PASSWORD_MINLEN=6
-CONFIG_MD5_SIZE_VS_SPEED=2
+CONFIG_MD5_SMALL=1
 # CONFIG_FEATURE_FAST_TOP is not set
 # CONFIG_FEATURE_ETC_NETWORKS is not set
 CONFIG_FEATURE_USE_TERMIOS=y