openssl: re-enable ARM assembly

The original reason for disabling it seems to have been fixed
Related discussion: https://github.com/lede-project/source/pull/307

Signed-off-by: Felix Fietkau <nbd@nbd.name>

package/libs/openssl/Makefile

@@ -154,8 +154,8 @@ else
   OPENSSL_OPTIONS+=no-sse2
   ifeq ($(CONFIG_mips)$(CONFIG_mipsel),y)
     OPENSSL_TARGET:=linux-mips-openwrt
-#  else ifeq ($(CONFIG_arm)$(CONFIG_armeb),y)
-#    OPENSSL_TARGET:=linux-armv4-openwrt
+  else ifeq ($(CONFIG_arm)$(CONFIG_armeb),y)
+    OPENSSL_TARGET:=linux-armv4-openwrt
   else
     OPENSSL_TARGET:=linux-generic-openwrt
     OPENSSL_OPTIONS+=no-perlasm