Fix spelling in comments (intruction -> instruction)

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>

bsd-user/main.c

@@ -237,7 +237,7 @@ void cpu_loop(CPUX86State *env)
             break;
 #ifndef TARGET_ABI32
         case EXCP_SYSCALL:
-            /* syscall from syscall intruction */
+            /* syscall from syscall instruction */
             if (bsd_type == target_freebsd)
                 env->regs[R_EAX] = do_freebsd_syscall(env,
                                                       env->regs[R_EAX],

linux-user/main.c

@@ -323,7 +323,7 @@ void cpu_loop(CPUX86State *env)
             break;
 #ifndef TARGET_ABI32
         case EXCP_SYSCALL:
-            /* linux syscall from syscall intruction */
+            /* linux syscall from syscall instruction */
             env->regs[R_EAX] = do_syscall(env,
                                           env->regs[R_EAX],
                                           env->regs[R_EDI],

tests/test-i386.c

@@ -2281,7 +2281,7 @@ void test_sse_comi(double a1, double b1)
 }
 
 /* Force %xmm0 usage to avoid the case where both register index are 0
-   to test intruction decoding more extensively */
+   to test instruction decoding more extensively */
 #define CVT_OP_XMM2MMX(op)\
 {\
     asm volatile (#op " %1, %0" : "=y" (r.q[0]) : "x" (a.dq) \