FIX: games/stepmania on arm64

Index: patches/patch-src_libtomcrypt_src_headers_tomcrypt_cfg_h
===================================================================
RCS file: patches/patch-src_libtomcrypt_src_headers_tomcrypt_cfg_h
diff -N patches/patch-src_libtomcrypt_src_headers_tomcrypt_cfg_h
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ patches/patch-src_libtomcrypt_src_headers_tomcrypt_cfg_h 2 May 2019 04:29:35 -0000
@@ -0,0 +1,23 @@
+$OpenBSD$
+
+Index: src/libtomcrypt/src/headers/tomcrypt_cfg.h
+--- src/libtomcrypt/src/headers/tomcrypt_cfg.h.orig
++++ src/libtomcrypt/src/headers/tomcrypt_cfg.h
+@@ -101,6 +101,17 @@ LTC_EXPORT int LTC_CALL XSTRCMP(const char *s1, cons
+ #endif
+ #endif
+
++/* detect arm64 and arm */
++#if defined(__OpenBSD__)
++ #if defined(__aarch64__)
++ #define ENDIAN_LITTLE
++ #define ENDIAN_64BITWORD
++ #elif defined(__arm__)
++ #define ENDIAN_LITTLE
++ #define ENDIAN_32BITWORD
++ #endif
++#endif
++
+
+ #ifdef LTC_NO_FAST
+ #ifdef LTC_FAST
Hi ports --

phessler@'s latest aarch64 bulk showed that games/stepmania failed to build.
The attach patch fixes things on it and armv7 as a bonus.

We could use this fix for alpha too (marked as BROKEN) though I doubt
anyone cares.

OK?

~Brian