espressif: add release notes

Signed-off-by: Almir Okato <almir.okato@espressif.com>
diff --git a/docs/release-notes.d/espressif-hal-updates.md b/docs/release-notes.d/espressif-hal-updates.md
new file mode 100644
index 0000000..121c885
--- /dev/null
+++ b/docs/release-notes.d/espressif-hal-updates.md
@@ -0,0 +1,3 @@
+- espressif: refactor after removing IDF submodule
+- espressif: add ESP32-C6, ESP32-C2 and ESP32-H2 new chips support
+- espressif: adjustments after IDF v5.1 compatibility, secure boot build and memory map organization