Docs/espressif: Add crypto defconfig docs for esp32[-s2|-s3]

Docs/espressif: Add crypto defconfig docs for Xtensa based Espressif devices

Signed-off-by: Eren Terzioglu <[email protected]>

Author: eren-terzioglu

Documentation/platforms/xtensa/esp32s2/boards/esp32s2-saola-1/index.rst

@@ -189,6 +189,24 @@ disables the NuttShell to get the best possible score.
 .. note:: As the NSH is disabled, the application will start as soon as the
   system is turned on.
 
+crypto
+------
+
+This configuration enables support for the cryptographic hardware and
+the ``/dev/crypto`` device file. Currently, we are supporting SHA-1,
+SHA-224 and SHA-256 algorithms using hardware.
+To test hardware acceleration, you can use `hmac` example and following output
+should look like this::
+
+    nsh> hmac
+    ...
+    hmac sha1 success
+    hmac sha1 success
+    hmac sha1 success
+    hmac sha256 success
+    hmac sha256 success
+    hmac sha256 success
+
 cxx
 ---
 

Documentation/platforms/xtensa/esp32s2/index.rst

@@ -391,7 +391,7 @@ RNG          Yes
 RSA          No
 RTC          Yes
 SD/MMC       Yes    SPI based SD card driver
-SHA          No
+SHA          Yes
 SPI          Yes
 SPIFLASH     Yes
 SPIRAM       Yes

Documentation/platforms/xtensa/esp32s3/boards/esp32s3-devkit/index.rst

@@ -195,6 +195,24 @@ disables the NuttShell to get the best possible score.
 .. note:: As the NSH is disabled, the application will start as soon as the
   system is turned on.
 
+crypto
+------
+
+This configuration enables support for the cryptographic hardware and
+the ``/dev/crypto`` device file. Currently, we are supporting SHA-1,
+SHA-224 and SHA-256 algorithms using hardware.
+To test hardware acceleration, you can use `hmac` example and following output
+should look like this::
+
+    nsh> hmac
+    ...
+    hmac sha1 success
+    hmac sha1 success
+    hmac sha1 success
+    hmac sha256 success
+    hmac sha256 success
+    hmac sha256 success
+
 cxx
 ---
 Development environment ready for C++ applications. You can check if the setup

Documentation/platforms/xtensa/esp32s3/index.rst

@@ -427,7 +427,7 @@ RSA          No
 RTC          Yes
 SDIO         No
 SD/MMC       Yes
-SHA          No
+SHA          Yes
 SPI          Yes
 SPIFLASH     Yes
 SPIRAM       Yes