arch/arm/src/kl: CMake build implemented for NXP KL Series Arm MCUs

- added NXP KL Series Arm MCUs

Signed-off-by: simbit18 <simbit18@gmail.com>

arch/arm/src/kl/CMakeLists.txt

@@ -0,0 +1,72 @@
+# ##############################################################################
+# arch/arm/src/kl/CMakeLists.txt
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more contributor
+# license agreements.  See the NOTICE file distributed with this work for
+# additional information regarding copyright ownership.  The ASF licenses this
+# file to you under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License.  You may obtain a copy of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations under
+# the License.
+#
+# ##############################################################################
+
+list(
+  APPEND
+  SRCS
+  kl_clockconfig.c
+  kl_gpio.c
+  kl_irq.c
+  kl_lowputc.c
+  kl_serial.c
+  kl_start.c
+  kl_cfmconfig.c)
+
+# Configuration-dependent Kinetis L files
+
+if(NOT CONFIG_ARCH_IDLE_CUSTOM)
+  list(APPEND SRCS kl_idle.c)
+endif()
+
+if(NOT CONFIG_SCHED_TICKLESS)
+  list(APPEND SRCS kl_timerisr.c)
+endif()
+
+if(CONFIG_BUILD_PROTECTED)
+  list(APPEND SRCS kl_userspace.c)
+endif()
+
+if(CONFIG_KL_GPIOIRQ)
+  list(APPEND SRCS kl_gpioirq.c)
+endif()
+
+if(CONFIG_ARCH_IRQPRIO)
+  list(APPEND SRCS kl_irqprio.c)
+endif()
+
+if(CONFIG_KL_SPI0)
+  list(APPEND SRCS kl_spi.c)
+else()
+  if(CONFIG_KL_SPI1)
+    list(APPEND SRCS kl_spi.c)
+  endif()
+endif()
+
+if(CONFIG_PWM)
+  list(APPEND SRCS kl_pwm.c)
+endif()
+
+if(CONFIG_DEBUG_FEATURES)
+  list(APPEND SRCS kl_dumpgpio.c)
+endif()
+
+target_sources(arch PRIVATE ${SRCS})