Changed the rcg rev number to 4.0.2, as 4.0.1 was the biquad fix

and this is the dac module ordering fix.

src/include/rcgversion.h

 #define RCG_VERSION_MAJOR 4
 #define RCG_VERSION_MINOR 0
-#define RCG_VERSION_SUB 1
+#define RCG_VERSION_SUB 2
 #define RCG_VERSION_REL 1