modules: hal_rpi_pico: Add hardware_sha256 to include directories

Add `hardware_sha256/include` to `zephyr_include_directories`.
Use the header only.

Signed-off-by: TOKITA Hiroshi <[email protected]>

Author: soburi

modules/hal_rpi_pico/CMakeLists.txt

@@ -157,6 +157,12 @@ if(CONFIG_HAS_RPI_PICO)
   zephyr_include_directories_ifdef(CONFIG_PICOSDK_USE_CLAIM
           ${common_dir}/hardware_claim/include)
 
+  zephyr_library_sources_ifdef(CONFIG_PICOSDK_USE_SHA256
+          ${rp2_common_dir}/pico_sha256/sha256.c)
+  zephyr_include_directories_ifdef(CONFIG_PICOSDK_USE_SHA256
+          ${rp2_common_dir}/hardware_sha256/include
+          ${rp2_common_dir}/pico_sha256/include)
+
   zephyr_include_directories_ifdef(CONFIG_RISCV
           ${common_dir}/pico_sync/include
           ${common_dir}/pico_time/include

modules/hal_rpi_pico/Kconfig

@@ -54,3 +54,8 @@ config PICOSDK_USE_RTC
 	bool
 	help
 	  Use the RTC driver from pico-sdk
+
+config PICOSDK_USE_SHA256
+	bool
+	help
+	  Use the SHA-256 driver and utilities from pico-sdk