fix(mmap): fixed some API read wrong data via mmap when flash being erased/written while XIP on PSRAM

Before:

The cache won't be disabled when XIP on psram. But during flash
erasing/programming, read data will be courrupt.

When XIP in psram is enabled, the image is not mapped to the cache so
usually there will be no flash access. The only way to read from flash
is via the driver or use mmap. The driver has protection during erasing,
while th mmap region not.

Now:

Mmap APIs provide a flag to make mmap->unmap region mutually exclusive
to flash erase/programming when XIP from psram. SPI Flash write APIs
will benefit from this. When the flag is used, no concurrent access to
mapped region will happen while writing; otherwise the cache will be
disable to avoid data corruption.

Most ESP-IDF APIs calls mmap with this flag. As for users calling
mmap-like APIs directly, they can choose whether to enable this by a
flag.

Closes https://github.com/espressif/esp-idf/issues/14897

components/esp_common/include/esp_attr.h

@@ -174,7 +174,8 @@ extern "C" {
 #define NOINLINE_ATTR __attribute__((noinline))
 
 // This allows using enum as flags in C++
-// Format: FLAG_ATTR(flag_enum_t)
+// Format: FLAG_ATTR(flag_enum_t).
+// Please use out of the extern "C"{} block of the header, otherwise there will be definition conflicts.
 #ifdef __cplusplus
 
 // Inline is required here to avoid multiple definition error in linker