r600: Fix GCC 'implication declaration of function' warnings.

Fix GCC 'implicit declaration of function' compiler warnings resulting
from commit 00fb58ed5d.

src/mesa/drivers/dri/r600/r700_fragprog.c

@@ -38,6 +38,7 @@
 
 #include "r600_context.h"
 #include "r600_cmdbuf.h"
+#include "r600_emit.h"
 
 #include "r700_fragprog.h"
 

src/mesa/drivers/dri/r600/r700_vertprog.c

@@ -42,6 +42,7 @@
 #include "radeon_debug.h"
 #include "r600_context.h"
 #include "r600_cmdbuf.h"
+#include "r600_emit.h"
 #include "program/programopt.h"
 
 #include "r700_debug.h"