meson: use a feature option for lmsensors

Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20409>

meson.build

@@ -2064,21 +2064,9 @@ if get_option('gallium-extra-hud')
   pre_args += '-DHAVE_GALLIUM_EXTRA_HUD=1'
 endif
 
-_sensors = get_option('lmsensors')
+dep_lmsensors = cc.find_library('sensors', required : get_option('lmsensors'))
-if _sensors == 'true'
+if dep_lmsensors.found()
-  _sensors = 'enabled'
-  warning('lmsensors option "true" deprecated, please use "enabled" instead.')
-elif _sensors == 'false'
-  _sensors = 'disabled'
-  warning('lmsensors option "false" deprecated, please use "disabled" instead.')
-endif
-if _sensors != 'disabled'
-  dep_lmsensors = cc.find_library('sensors', required : _sensors == 'enabled')
-  if dep_lmsensors.found()
   pre_args += '-DHAVE_LIBSENSORS=1'
-  endif
-else
-  dep_lmsensors = null_dep
 endif
 
 _shader_replacement = get_option('custom-shader-replacement')

meson_options.txt

@@ -345,9 +345,7 @@ option(
 )
 option(
   'lmsensors',
-  type : 'combo',
+  type : 'feature',
-  value : 'auto',
-  choices : ['auto', 'true', 'false', 'enabled', 'disabled'],
   description : 'Enable HUD lmsensors support.'
 )
 option(