cmake: Use cmake_lint project, tidy up all CMake source files

components/bootloader/project_include.cmake

@@ -1,5 +1,5 @@
 if(BOOTLOADER_BUILD)
-  return()  # don't keep recursing!
+    return()  # don't keep recursing!
 endif()
 
 # Glue to build the bootloader subproject binary as an external
@@ -8,24 +8,26 @@ endif()
 #
 set(bootloader_build_dir "${CMAKE_BINARY_DIR}/bootloader")
 set(bootloader_binary_files
-  "${bootloader_build_dir}/bootloader.elf"
-  "${bootloader_build_dir}/bootloader.bin"
-  "${bootloader_build_dir}/bootloader.map"
-  )
+    "${bootloader_build_dir}/bootloader.elf"
+    "${bootloader_build_dir}/bootloader.bin"
+    "${bootloader_build_dir}/bootloader.map"
+    )
 
-ExternalProject_Add(bootloader
-  # TODO: support overriding the bootloader in COMPONENT_PATHS
-  SOURCE_DIR "${IDF_PATH}/components/bootloader/subproject"
-  BINARY_DIR "${bootloader_build_dir}"
-  CMAKE_ARGS -DSDKCONFIG=${SDKCONFIG} -DIDF_PATH="${IDF_PATH}"
-  INSTALL_COMMAND ""
-  BUILD_ALWAYS 1  # no easy way around this...
-  BUILD_BYPRODUCTS ${bootloader_binary_files}
-  )
+externalproject_add(bootloader
+    # TODO: support overriding the bootloader in COMPONENT_PATHS
+    SOURCE_DIR "${IDF_PATH}/components/bootloader/subproject"
+    BINARY_DIR "${bootloader_build_dir}"
+    CMAKE_ARGS -DSDKCONFIG=${SDKCONFIG} -DIDF_PATH="${IDF_PATH}"
+    INSTALL_COMMAND ""
+    BUILD_ALWAYS 1  # no easy way around this...
+    BUILD_BYPRODUCTS ${bootloader_binary_files}
+    )
 
 # this is a hack due to an (annoying) shortcoming in cmake, it can't
 # extend the 'clean' target to the external project
 # see thread: https://cmake.org/pipermail/cmake/2016-December/064660.html
 #
 # So for now we just have the top-level build remove the final build products...
-set_property(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}" APPEND PROPERTY ADDITIONAL_MAKE_CLEAN_FILES ${bootloader_binary_files})
+set_property(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}" APPEND PROPERTY
+    ADDITIONAL_MAKE_CLEAN_FILES
+    ${bootloader_binary_files})