build: use integer for max ethdev ports option

max_ethports was merged after the other patch was written:

e04ea7f ("build: use integers for numerical options")

So convert this one too like the others have already been.

Fixes: d5555fc ("build: add option to override max ethdev ports")

Signed-off-by: Luca Boccassi <[email protected]>

Author: bluca

meson_options.txt

@@ -20,7 +20,7 @@ option('lib_musdk_dir', type: 'string', value: '',
 	description: 'path to the MUSDK library installation directory')
 option('machine', type: 'string', value: 'native',
 	description: 'set the target machine type')
-option('max_ethports', type: 'string', value: '32',
+option('max_ethports', type: 'integer', value: 32,
 	description: 'maximum number of Ethernet devices')
 option('max_lcores', type: 'integer', value: 128,
 	description: 'maximum number of cores/threads supported by EAL')