hal: renesas: ra: Remove cmath include to avoid build error

Remove include <cmath> in bsp_tfu.h to avoid build error

Signed-off-by: Khoa Nguyen <[email protected]>

Author: khoa-nguyen-18

drivers/ra/README

@@ -114,4 +114,8 @@ Patch List:
 
    * Reflect OFS setting for sdram from Zephyr device-tree value
    Impacted files:
-      zephyr/ra/ra_cfg/fsp_cfg/bsp/**/bsp_mcu_family_cfg.h
+      zephyr/ra/ra_cfg/fsp_cfg/bsp/**/bsp_mcu_family_cfg.h
+
+   * Remove include <cmath> in bsp_tfu.h to avoid build error
+   Impacted files:
+      zephyr/ra/portable/bsp_tfu.h

zephyr/ra/portable/bsp_tfu.h

@@ -12,10 +12,9 @@
  **********************************************************************************************************************/
 
 /* Mathematical Functions includes. */
+#include <math.h>
 #ifdef __cplusplus
- #include <cmath>
-#else
- #include <math.h>
+extern "C" {
 #endif
 
 /** Common macro for FSP header files. There is also a corresponding FSP_FOOTER macro at the end of this file. */
@@ -215,4 +214,8 @@ BSP_TFU_INLINE void __atan2hypotf (float y_cord, float x_cord, float * atan2, fl
 /** Common macro for FSP header files. There is also a corresponding FSP_HEADER macro at the top of this file. */
 FSP_FOOTER
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif                                 /* RENESAS_TFU */