Reorganize assembler macro sightly.

src/libcryptobox/chacha20/avx.S

@@ -1,4 +1,4 @@
-#include "macro.S"
+#include "../macro.S"
 #include "constants.S"
 SECTION_TEXT
 

src/libcryptobox/chacha20/avx2.S

@@ -1,4 +1,4 @@
-#include "macro.S"
+#include "../macro.S"
 #include "constants.S"
 SECTION_TEXT
 

src/libcryptobox/chacha20/sse2.S

@@ -1,4 +1,4 @@
-#include "macro.S"
+#include "../macro.S"
 #include "constants.S"
 SECTION_TEXT
 

src/libcryptobox/poly1305/avx.S

@@ -1,4 +1,4 @@
-#include "../chacha20/macro.S"
+#include "../macro.S"
 #include "constants.S"
 
 SECTION_TEXT

src/libcryptobox/poly1305/avx2.S

@@ -1,4 +1,4 @@
-#include "../chacha20/macro.S"
+#include "../macro.S"
 #include "constants.S"
 SECTION_TEXT
 

src/libcryptobox/poly1305/sse2.S

@@ -1,4 +1,4 @@
-#include "../chacha20/macro.S"
+#include "../macro.S"
 #include "constants.S"
 
 SECTION_TEXT