[nrf fromlist] net: wifi: shell: Enable Wi-Fi credentials support

Enable Wi-Fi credentials support. Update the heap sizes as
required for enterprise mode.

Upstream PR #: 88653

Signed-off-by: Ravi Dondaputi <[email protected]>

Author: rado17

modules/hostap/Kconfig

@@ -25,7 +25,7 @@ if WIFI_NM_WPA_SUPPLICANT
 
 config HEAP_MEM_POOL_ADD_SIZE_HOSTAP
 	def_int 66560 if WIFI_NM_HOSTAPD_AP
-	def_int 48000 if WIFI_NM_WPA_SUPPLICANT_CRYPTO_ENTERPRISE
+	def_int 55000 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
 	def_int 30000

samples/net/wifi/overlay-enterprise.conf

@@ -7,4 +7,4 @@ CONFIG_NET_BUF_RX_COUNT=36
 # For TLS and X.509 processing MbedTLS needs large heap size and using separate heap
 # for MbedTLS gives us more control over the heap size.
 CONFIG_MBEDTLS_ENABLE_HEAP=y
-CONFIG_MBEDTLS_HEAP_SIZE=60000
+CONFIG_MBEDTLS_HEAP_SIZE=70000

samples/net/wifi/shell/prj.conf

@@ -36,3 +36,11 @@ CONFIG_NET_L2_WIFI_SHELL=y
 # environment.
 CONFIG_NET_MGMT_EVENT_QUEUE_TIMEOUT=5000
 CONFIG_NET_MGMT_EVENT_QUEUE_SIZE=16
+
+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