freertos: fix error when including xtensa-timer.h from other components

components/freertos/include/freertos/xtensa_rtos.h

@@ -55,7 +55,7 @@ Should be included by all Xtensa generic and RTOS port-specific sources.
 /*
 Include any RTOS specific definitions that are needed by this header.
 */
-#include    <FreeRTOSConfig.h>
+#include    "FreeRTOSConfig.h"
 
 /*
 Convert FreeRTOSConfig definitions to XTENSA definitions.

components/freertos/include/freertos/xtensa_timer.h

@@ -49,7 +49,7 @@ and the Xtensa core configuration need not have a timer.
 
 #include    "xtensa_rtos.h"     /* in case this wasn't included directly */
 
-#include    <FreeRTOSConfig.h>
+#include    "FreeRTOSConfig.h"
 
 /*
 Select timer to use for periodic tick, and determine its interrupt number