Misc build fixes (#21413)

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Marlin/src/pins/ramps/pins_RAMPS.h

@@ -45,6 +45,10 @@
  *         7 | 11
  */
 
+#if ENABLED(AZSMZ_12864) && DISABLED(ALLOW_SAM3X8E)
+  #error "No pins defined for RAMPS with AZSMZ_12864."
+#endif
+
 #include "env_validate.h"
 
 // Custom flags and defines for the build
@@ -720,9 +724,6 @@
     #elif ENABLED(AZSMZ_12864)
 
       // Pins only defined for RAMPS_SMART currently
-      #if DISABLED(IS_RAMPS_SMART)
-        #error "No pins defined for RAMPS with AZSMZ_12864."
-      #endif
 
     #elif IS_TFTGLCD_PANEL