Fix clang build failure for cputest

Signed-off-by: Ray-V <ray-v@inbox.lv>
(cherry picked from commit 02323df78a)

k9vamps/cputest.cpp

@@ -21,9 +21,9 @@
 /* ebx saving is necessary for PIC. gcc seems unable to see it alone */
 #define cpuid(index,eax,ebx,ecx,edx)\
     __asm __volatile\
-        ("mov %%"REG_b", %%"REG_S"\n\t"\
+        ("mov %%" REG_b ", %%" REG_S "\n\t"\
          "cpuid\n\t"\
-         "xchg %%"REG_b", %%"REG_S\
+         "xchg %%" REG_b ", %%" REG_S\
          : "=a" (eax), "=S" (ebx),\
            "=c" (ecx), "=d" (edx)\
          : "0" (index));