Rename CONFIG_LINUX_GPIOD --> CONFIG_LINUX_GPIO_SPI

Rename the config variable so it matches the programmer driver's name.

Change-Id: I5cb44203dc9bb3db6de0c79e97435a376c059723
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/73588
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/meson.build b/meson.build
index fa08c93..81b3b8b 100644
--- a/meson.build
+++ b/meson.build
@@ -299,7 +299,7 @@
     'deps'    : [ libgpiod ],
     'groups'  : [ group_gpiod, group_external ],
     'srcs'    : files('linux_gpio_spi.c'),
-    'flags'   : [ '-DCONFIG_LINUX_GPIOD=1' ],
+    'flags'   : [ '-DCONFIG_LINUX_GPIO_SPI=1' ],
   },
   'linux_mtd' : {
     'systems' : [ 'linux' ],