Fix some more missing #pragma onces (#20241)

keyboards/handwired/d48/taphold.h

@@ -1,3 +1,5 @@
+#pragma once
+
 #include "quantum.h"
 
 typedef enum taphold_mode_t {

keyboards/handwired/promethium/color.h

@@ -1,3 +1,5 @@
+#pragma once
+
 #define COLOR_BLANK       0, 0, 0
 
 #define COLOR_BLACK       0, 0, 0

keyboards/handwired/promethium/rgbsps.h

@@ -1,3 +1,5 @@
+#pragma once
+
 void rgbsps_set(uint8_t index, uint8_t r, uint8_t g, uint8_t b);
 void rgbsps_setall(uint8_t r, uint8_t g, uint8_t b);
 void rgbsps_turnoff(void);

keyboards/handwired/symmetric70_proto/matrix_fast/test_config.h

@@ -1,3 +1,5 @@
+#pragma once
+
 // list of OUTPUT(row) ports
 #define MATRIX_OUT_PORTS (Port_D, MCU_GPIO, D0), (Port_C, MCU_GPIO, C0), (Port_E, MCU_GPIO, E0), (Port_B, MCU_GPIO, B0)
 // list of OUTPUT(row) pins

keyboards/handwired/symmetric70_proto/matrix_fast/test_config_74hc157.h

@@ -1,3 +1,5 @@
+#pragma once
+
 #define MATRIX_EXTENSION_74HC157 B2
 // #define MATRIX_EXTENSION_74HC153 B2, B6
 

keyboards/handwired/symmetric70_proto/matrix_fast/test_config_direct.h

@@ -1,3 +1,5 @@
+#pragma once
+
 #if defined(__AVR__)
 /* -------------------- AVR (Pro Micro) ----------------------- */