net: wifi: shell: Enable Wi-Fi credentials support

Add a snippet for Wi-Fi credentials support. Update the heap sizes as
required for enterprise mode.

Signed-off-by: Ravi Dondaputi <ravi.dondaputi@nordicsemi.no>

modules/hostap/Kconfig

@@ -25,6 +25,7 @@ if WIFI_NM_WPA_SUPPLICANT
 
 config HEAP_MEM_POOL_ADD_SIZE_HOSTAP
 	def_int 66560 if WIFI_NM_HOSTAPD_AP
+	def_int 55000 if WIFI_NM_WPA_SUPPLICANT_CRYPTO_ENTERPRISE && WIFI_CREDENTIALS
 	def_int 48000 if WIFI_NM_WPA_SUPPLICANT_CRYPTO_ENTERPRISE
 	def_int 41808 if WIFI_NM_WPA_SUPPLICANT_AP
 	# 30K is mandatory, but might need more for long duration use cases

snippets/wifi-credentials/README.rst

@@ -0,0 +1,29 @@
+.. _snippet-wifi-credentials:
+
+Wi-Fi Credentials Snippet (wifi-credential)
+###########################################
+
+.. code-block:: console
+
+   west build  -S wifi-credentials [...]
+
+Can also be used along with the :ref:`snippet-wifi-enterprise` snippet.
+
+.. code-block:: console
+
+   west build  -S "wifi-enterprise,wifi-credentials" [...]
+
+Overview
+********
+
+This snippet enables Wi-Fi credentials support.
+
+Requirements
+************
+
+Hardware support for:
+
+- :kconfig:option:`CONFIG_WIFI`
+- :kconfig:option:`CONFIG_WIFI_USE_NATIVE_NETWORKING`
+- :kconfig:option:`CONFIG_WIFI_NM_WPA_SUPPLICANT`
+- :kconfig:option:`CONFIG_WIFI_NM_WPA_SUPPLICANT_CRYPTO_ENTERPRISE`

snippets/wifi-credentials/snippet.yml

@@ -0,0 +1,3 @@
+name: wifi-credentials
+append:
+  EXTRA_CONF_FILE: wifi-credentials.conf

snippets/wifi-credentials/wifi-credentials.conf

@@ -0,0 +1,8 @@
+# For use with Wi-Fi Credentials
+CONFIG_WIFI_CREDENTIALS=y
+CONFIG_FLASH=y
+CONFIG_FLASH_PAGE_LAYOUT=y
+CONFIG_FLASH_MAP=y
+CONFIG_NVS=y
+CONFIG_SETTINGS=y
+CONFIG_SETTINGS_NVS=y