boards/arm/stm32f0l0g0: CMake fix build b-l072z-lrwan1:nxlines_oled

fix b-l072z-lrwan1:nxlines_oled
b-l072z-lrwan1/src/stm32_lcd_ssd1306.c:38:10: fatal error: stm32_ssd1306.h: No such file or directory
   38 | #include "stm32_ssd1306.h"
      |          ^~~~~~~~~~~~~~~~~

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

Author: simbit18

boards/arm/stm32f0l0g0/common/CMakeLists.txt

@@ -0,0 +1,24 @@
+# ##############################################################################
+# boards/arm/stm32f0l0g0/common/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.
+#
+# ##############################################################################
+
+add_subdirectory(src)
+target_include_directories(board PRIVATE include)

boards/arm/stm32f0l0g0/common/src/CMakeLists.txt

@@ -0,0 +1,30 @@
+# ##############################################################################
+# boards/arm/stm32f0l0g0/common/src/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.
+#
+# ##############################################################################
+
+if(CONFIG_ARCH_BOARD_COMMON)
+
+  if(CONFIG_LCD_SSD1306)
+    list(APPEND SRCS stm32_ssd1306.c)
+  endif()
+
+endif()
+target_sources(board PRIVATE ${SRCS})