fix(ll): fix cpp compile error

Merges https://github.com/espressif/esp-idf/pull/12093

fix(ll): remove FLAG_ATTR macro

Such kind of operator overload will not work because C++ thinks such overload is ambiguous and it still prefer the built-in one which accepts and returns integer. Manually force type conversion seems to be unavoidable.

components/hal/esp32c6/include/hal/mpi_ll.h

@@ -7,6 +7,7 @@
 
 #include <stdbool.h>
 #include <string.h>
+#include <sys/param.h>
 #include "hal/assert.h"
 #include "hal/mpi_types.h"
 #include "soc/pcr_reg.h"
@@ -17,6 +18,7 @@
 extern "C" {
 #endif
 
+
 static inline size_t mpi_ll_calculate_hardware_words(size_t words)
 {
     return words;