spi_flash: fix build error with profiling enabled

components/spi_flash/flash_ops.c

@@ -30,6 +30,7 @@
 #include "esp_attr.h"
 #include "esp_spi_flash.h"
 #include "esp_log.h"
+#include "esp_clk.h"
 #include "cache_utils.h"
 
 /* bytes erased by SPIEraseBlock() ROM function */