dey-examples-cryptochip: inherit pkgconfig

With the migration from dey-2.2 to dey-2.4, now it is mandatory to include
all required applications for compilation. This fixes the next error:

| make: pkg-config: Command not found
| main.c:20:10: fatal error: cryptoauthlib.h: No such file or directory
|  #include <cryptoauthlib.h>

https://jira.digi.com/browse/DEL-5710

Signed-off-by: Isaac Hermida <isaac.hermida@digi.com>

meta-digi-dey/recipes-digi/dey-examples/dey-examples-cryptochip.bb

@@ -19,6 +19,8 @@ SRC_URI = "${CC_GIT_URI};branch=${SRCBRANCH}"
 
 S = "${WORKDIR}/git/cryptochip-get-random"
 
+inherit pkgconfig
+
 do_install() {
 	oe_runmake DESTDIR=${D} install
 }