Workaround Uncrustify parsing of "asm"

The following code:

 #ifndef asm
 #define asm __asm
 #endif

causes Uncrustify to stop correcting the rest of the file. This may be
due to parsing the "asm" keyword in the definition.

Work around this by wrapping the idiom in an *INDENT-OFF* comment
wherever it appears.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/library/sha512.c b/library/sha512.c
index 5de151d..46e3dab 100644
--- a/library/sha512.c
+++ b/library/sha512.c
@@ -104,9 +104,11 @@
 #include <signal.h>
 #include <setjmp.h>
 
+/* *INDENT-OFF* */
 #ifndef asm
 #define asm __asm__
 #endif
+/* *INDENT-ON* */
 
 static jmp_buf return_from_sigill;
 
@@ -297,9 +299,11 @@
 #  define mbedtls_internal_sha512_process_a64_crypto      mbedtls_internal_sha512_process
 #endif
 
+/* *INDENT-OFF* */
 #ifndef asm
 #define asm __asm__
 #endif
+/* *INDENT-ON* */
 
 /* Accelerated SHA-512 implementation originally written by Simon Tatham for PuTTY,
  * under the MIT licence; dual-licensed as Apache 2 with his kind permission.