set non-zero M4 RAM only to dualcore devices

cmake/stm32/h7.cmake

@@ -1,9 +1,9 @@
 set(STM32_H7_TYPES 
-    H743xx H753xx H750xx H742xx H745xx H755xx H747xx H757xx
+    H743xx H753xx  H750xx H742xx  H745xx H755xx H747xx H757xx
     H7A3xx H7A3xxQ H7B3xx H7B3xxQ H7B0xx H7B0xxQ
 )
 set(STM32_H7_TYPE_MATCH 
-   "H743.." "H753.." "H750.." "H742.." "H745.." "H755.." "H747.." "H757.."
+   "H743.." "H753.."  "H750.." "H742.."  "H745.." "H755.." "H747.." "H757.."
    "H7A3.." "H7A3..Q" "H7B3.." "H7B3..Q" "H7B0.." "H7B0..Q"
 )
 set(STM32_H7_RAM_SIZES
@@ -11,8 +11,8 @@ set(STM32_H7_RAM_SIZES
     128K 128K 128K 128K 128K 128K 
 )
 set(STM32_H7_M4_RAM_SIZES
-    288K 288K 288K 288K 288K 288K 288K 288K
-    288K 288K 288K 288K 288K 288K 
+      0K   0K   0K   0K 288K 288K 288K 288K
+      0K   0K   0K   0K   0K   0K 
 )
 
 set(STM32_H7_CCRAM_SIZES