fix: preserve Linux component header registration

Keep Linux components include-only when their runtime dependencies are unavailable.

Co-authored-by: Cursor <cursoragent@cursor.com>

components/esp_driver_sdio/CMakeLists.txt

@@ -1,9 +1,5 @@
 idf_build_get_property(target IDF_TARGET)
 
-if(${target} STREQUAL "linux")
-    return() # This component is not supported by the POSIX/Linux simulator
-endif()
-
 set(srcs)
 
 set(public_include "include")
@@ -13,10 +9,16 @@ if(CONFIG_SOC_SDIO_SLAVE_SUPPORTED)
     list(APPEND srcs "src/sdio_slave.c")
 endif()
 
-set(priv_requires esp_driver_gpio esp_ringbuf)
+if(${target} STREQUAL "linux")
+    set(requires "")
+    set(priv_requires esp_ringbuf)
+else()
+    set(requires esp_hal_sd)
+    set(priv_requires esp_driver_gpio esp_ringbuf)
+endif()
 
 idf_component_register(SRCS ${srcs}
                        INCLUDE_DIRS ${public_include}
-                       REQUIRES esp_hal_sd
+                       REQUIRES "${requires}"
                        PRIV_REQUIRES "${priv_requires}"
                       )