Use functionally equivalent dynamic targets

Similar to `drivers/other/dynamic.c`, I've looked for functionally
equivalent targets and mapped them in the default DYNAMIC_ARCH build.
Users can still build specific cores using DYNAMIC_LIST.

Makefile.system

@@ -677,16 +677,12 @@ ifeq ($(ARCH), arm64)
 DYNAMIC_CORE =  ARMV8
 DYNAMIC_CORE += CORTEXA53
 DYNAMIC_CORE += CORTEXA57
-DYNAMIC_CORE += CORTEXA72
-DYNAMIC_CORE += CORTEXA73
 DYNAMIC_CORE += NEOVERSEN1
 ifneq ($(NO_SVE), 1)
 DYNAMIC_CORE += NEOVERSEV1
 DYNAMIC_CORE += NEOVERSEN2
 DYNAMIC_CORE += ARMV8SVE
 endif
-DYNAMIC_CORE += CORTEXA55
-DYNAMIC_CORE += FALKOR
 DYNAMIC_CORE += THUNDERX
 DYNAMIC_CORE += THUNDERX2T99
 DYNAMIC_CORE += TSV110

driver/others/dynamic_arm64.c

@@ -122,10 +122,11 @@ extern gotoblas_t  gotoblas_CORTEXA55;
 #endif
 #else
 extern gotoblas_t  gotoblas_CORTEXA53;
+#define gotoblas_CORTEXA55 gotoblas_CORTEXA53
 extern gotoblas_t  gotoblas_CORTEXA57;
-extern gotoblas_t  gotoblas_CORTEXA72;
-extern gotoblas_t  gotoblas_CORTEXA73;
-extern gotoblas_t  gotoblas_FALKOR;
+#define gotoblas_CORTEXA72 gotoblas_CORTEXA57
+#define gotoblas_CORTEXA73 gotoblas_CORTEXA57
+#define gotoblas_FALKOR gotoblas_CORTEXA57
 extern gotoblas_t  gotoblas_THUNDERX;
 extern gotoblas_t  gotoblas_THUNDERX2T99;
 extern gotoblas_t  gotoblas_TSV110;
@@ -141,7 +142,6 @@ extern gotoblas_t  gotoblas_ARMV8SVE;
 #define gotoblas_ARMV8SVE   gotoblas_ARMV8
 #endif
 extern gotoblas_t  gotoblas_THUNDERX3T110;
-extern gotoblas_t  gotoblas_CORTEXA55;
 #endif
 
 extern void openblas_warning(int verbose, const char * msg);