meson: Add elanspi to list of default drivers

Pretty much all downstream distributions just enable all drivers anyway.
Also, it should work well enough, so it seems right to simply add
elanspi into the list of drivers that are enabled by default.

meson.build

@@ -98,10 +98,6 @@ virtual_drivers = [
     'virtual_device_storage',
 ]
 
-udev_drivers = [
-    'elanspi'
-]
-
 default_drivers = [
     'upektc_img',
     'vfs5011',
@@ -125,7 +121,10 @@ default_drivers = [
     'upeksonly',
     'upekts',
     'goodixmoc',
-    'nb1010'
+    'nb1010',
+
+    # SPI
+    'elanspi',
 ]
 
 # FIXME: All the drivers should be fixed by adjusting the byte order.
@@ -135,7 +134,7 @@ endian_independent_drivers = virtual_drivers + [
     'synaptics',
 ]
 
-all_drivers = default_drivers + virtual_drivers + udev_drivers
+all_drivers = default_drivers + virtual_drivers
 
 if drivers == [ 'all' ]
     drivers = all_drivers
@@ -145,6 +144,11 @@ if drivers == [ 'default' ]
     drivers = default_drivers
 endif
 
+# For detection whether udev is needed
+udev_drivers = [
+    'elanspi'
+]
+
 if drivers.length() == 0 or drivers[0] == ''
     error('Cannot build libfprint without drivers, please specify a valid value for the drivers option')
 endif