fusee_cpp: cache cleanup, confirmed working on hardware

exosphere/program/sc7fw/source/sc7fw_main.cpp

@@ -58,8 +58,8 @@ namespace ams::sc7fw {
 
         void EnterSc7() {
             /* Disable read buffering and write buffering in the BPMP cache. */
-            reg::ReadWrite(AVP_CACHE_ADDRESS(AVP_CACHE_CONFIG), AVP_CACHE_REG_BITS_ENUM(DISABLE_WB, TRUE),
-                                                                AVP_CACHE_REG_BITS_ENUM(DISABLE_RB, TRUE));
+            reg::ReadWrite(AVP_CACHE_ADDR(AVP_CACHE_CONFIG), AVP_CACHE_REG_BITS_ENUM(CONFIG_DISABLE_WB, TRUE),
+                                                             AVP_CACHE_REG_BITS_ENUM(CONFIG_DISABLE_RB, TRUE));
 
             /* Ensure the CPU Rail is turned off. */
             DisableCrail();