Moved proj up

FreeRTOS/portable/IAR/RISC-V/chip_extensions.cmake

@@ -0,0 +1,16 @@
+if( FREERTOS_PORT STREQUAL "IAR_RISC_V_GENERIC" )
+    set( VALID_CHIP_EXTENSIONS
+            "RV32I_CLINT_no_extensions" )
+
+    if( ( NOT FREERTOS_RISCV_EXTENSION ) OR ( NOT ( ${FREERTOS_RISCV_EXTENSION} IN_LIST VALID_CHIP_EXTENSIONS ) ) )
+        message(FATAL_ERROR
+                "FREERTOS_RISCV_EXTENSION \"${FREERTOS_RISCV_EXTENSION}\" is not set or unsupported.\n"
+                "Please specify it from top-level CMake file (example):\n"
+                "   set(FREERTOS_RISCV_EXTENSION RISCV_MTIME_CLINT_no_extensions CACHE STRING \"\")\n"
+                " or from CMake command line option:\n"
+                "   -DFREERTOS_RISCV_EXTENSION=RISCV_MTIME_CLINT_no_extensions\n"
+                "\n"
+                " Available extension options:\n"
+                "   ${VALID_CHIP_EXTENSIONS} \n")
+    endif()
+endif()