readded peripheral guards for SDRAM

Author: DannyCato

include/core/io/SDRAM.hpp

@@ -1,6 +1,8 @@
 #ifndef EVT_SDRAM_HPP
 #define EVT_SDRAM_HPP
 #include <core/io/pin.hpp>
+
+#ifdef STM32F4xx
 #include <HALf4/stm32f4xx_hal.h>
 
 namespace core::io {
@@ -199,4 +201,6 @@ class SDRAM {
 
 } // namespace core::io
 
+#endif
+
 #endif // STM32F4xx