build system: add 'linux' component to common requirements

'linux' component provides some of the common header files, such as
'sys/queue.h' and 'sys/lock.h'. For chip targets, it is possible to
include these files without having to add any extra requirements.
With this change, the same behavior will apply for the linux target.

components/spi_flash/CMakeLists.txt

@@ -8,7 +8,7 @@ if(${target} STREQUAL "linux")
     idf_component_register(SRCS "${srcs}"
         INCLUDE_DIRS include ${hal_dir}/include ${bootloader_support_dir}/include
         PRIV_INCLUDE_DIRS include/spi_flash
-        PRIV_REQUIRES linux partition_table)
+        PRIV_REQUIRES partition_table)
     return()
 endif()
 

tools/cmake/build.cmake

@@ -206,7 +206,7 @@ function(__build_init idf_path)
     endforeach()
 
     if("${target}" STREQUAL "linux")
-        set(requires_common freertos log esp_rom esp_common)
+        set(requires_common freertos log esp_rom esp_common linux)
         idf_build_set_property(__COMPONENT_REQUIRES_COMMON "${requires_common}")
     else()
         # Set components required by all other components in the build