sim: Homogenize max-align-32 feature check

This feature check was done statically instead of dynamically in the
build.rs file.  Change this to match the rest.  Perhaps we might want to
change all of them to be done at compile time, but that should be done
with all of the features.

Signed-off-by: David Brown <david.brown@linaro.org>

Author: d3zd3z

sim/mcuboot-sys/build.rs

@@ -33,6 +33,7 @@ fn main() {
     let downgrade_prevention = env::var("CARGO_FEATURE_DOWNGRADE_PREVENTION").is_ok();
     let ram_load = env::var("CARGO_FEATURE_RAM_LOAD").is_ok();
     let direct_xip = env::var("CARGO_FEATURE_DIRECT_XIP").is_ok();
+    let max_align_32 = env::var("CARGO_FEATURE_MAX_ALIGN_32").is_ok();
 
     let mut conf = CachedBuild::new();
     conf.conf.define("__BOOTSIM__", None);
@@ -41,11 +42,11 @@ fn main() {
     conf.conf.define("MCUBOOT_HAVE_ASSERT_H", None);
     conf.conf.define("MCUBOOT_MAX_IMG_SECTORS", Some("128"));
 
-#[cfg(not(feature = "max-align-32"))]
-    conf.conf.define("MCUBOOT_BOOT_MAX_ALIGN", Some("8"));
-
-#[cfg(feature = "max-align-32")]
-    conf.conf.define("MCUBOOT_BOOT_MAX_ALIGN", Some("32"));
+    if max_align_32 {
+        conf.conf.define("MCUBOOT_BOOT_MAX_ALIGN", Some("32"));
+    } else {
+        conf.conf.define("MCUBOOT_BOOT_MAX_ALIGN", Some("8"));
+    }
 
     conf.conf.define("MCUBOOT_IMAGE_NUMBER", Some(if multiimage { "2" } else { "1" }));