meson: add option to install intel-clc

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26797>

meson_options.txt

@@ -642,6 +642,13 @@ option(
   description : 'Build the intel-clc compiler.'
 )
 
+option(
+  'install-intel-clc',
+  type : 'boolean',
+  value : false,
+  description : 'Install the intel-clc compiler (if needed for cross builds).'
+)
+
 option(
   'intel-rt',
   type : 'combo',

src/intel/compiler/meson.build

@@ -187,6 +187,7 @@ elif with_intel_clc
     link_args : [ld_args_build_id],
     dependencies : [idep_nir, idep_vtn, idep_mesaclc, idep_mesautil, idep_intel_dev],
     native : true,
+    install : get_option('install-intel-clc'),
   )
   dep_prog_intel_clc = [prog_intel_clc]
 endif