Update recipie to get it building and fix license

package/valgrind/package

@@ -5,11 +5,11 @@ pkgver="3.21.0-1"
 timestamp="2023-04-28T02:49:00Z"
 maintainer="Eeems <eeems@eeems.email>"
 url=https://valgrind.org
-license=MIT
+license=GPL-2.0-only
 source=(https://sourceware.org/pub/valgrind/valgrind-3.21.0.tar.bz2)
 sha256sums=(10ce1618bb3e33fad16eb79552b0a3e1211762448a0d7fce11c8a6243b9ac971)
 image=base:v2.3
-makedepends=(build:automake)
+makedepends=(build:gawk build:automake)
 
 build() {
     ./autogen.sh
@@ -19,7 +19,7 @@ build() {
 
 package() {
     cd "$srcdir"
-    # Work around the make install not creating this directory
+    # Work around make install not creating this directory
     mkdir -p "$pkgdir"/opt/libexec/valgrind
     make DESTDIR="$pkgdir" install
 }