Merge thumbv7em and thumbv7m build configs

As there is no need to differentiate between those two targets
currently, merge them together in the build script in order to fix a
clippy lint.

Signed-off-by: Hugues de Valon <[email protected]>

Author: hug-dev

build.rs

@@ -19,12 +19,12 @@ fn main() {
     if target.starts_with("thumbv6m-") {
         println!("cargo:rustc-cfg=cortex_m");
         println!("cargo:rustc-cfg=armv6m");
-    } else if target.starts_with("thumbv7m-") {
-        println!("cargo:rustc-cfg=cortex_m");
-        println!("cargo:rustc-cfg=armv7m");
-    } else if target.starts_with("thumbv7em-") {
+    } else if target.starts_with("thumbv7m-") || target.starts_with("thumbv7em-") {
         println!("cargo:rustc-cfg=cortex_m");
         println!("cargo:rustc-cfg=armv7m");
+        // There is currently no need to differentiate the Armv7E-M implementation which contains
+        // the DSP extension. If it happens, the following line will have to be added in another if
+        // condition.
         //println!("cargo:rustc-cfg=armv7em");
     } else if target.starts_with("thumbv8m.base") {
         println!("cargo:rustc-cfg=cortex_m");