meson_options: Enable all features by default

Enable all features so that the repo CI could compile all the code.

Signed-off-by: Lei YU <yulei.sh@bytedance.com>
Change-Id: I2039c9c9f422d70cc0e47636736df82991eccf33
diff --git a/meson_options.txt b/meson_options.txt
index 4def7f9..de3540c 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -9,20 +9,20 @@
     description: 'The BMC layout type.')
 
 # Features
-option('host-bios-upgrade', type: 'feature',
+option('host-bios-upgrade', type: 'feature', value: 'enabled',
     description: 'Enable host bios upgrade support.')
 
-option('sync-bmc-files', type: 'feature',
+option('sync-bmc-files', type: 'feature', value: 'enabled',
     description: 'Enable sync of filesystem files.')
 
 option('tests', type: 'feature', description: 'Build tests')
 
 option('oe-sdk', type: 'feature', description: 'Enable OE SDK')
 
-option('verify-signature', type: 'feature',
+option('verify-signature', type: 'feature', value: 'enabled',
     description: 'LEGACY: Use verify-full-signature instead. Enable image signature validation.')
 
-option('verify-full-signature', type: 'feature',
+option('verify-full-signature', type: 'feature', value: 'enabled',
     description: 'Enable image full signature validation.')
 
 # Variables