package/rpm: fix recursive dependency

Fix the following recursive dependency added with commit
429e247b:

package/openssl/Config.in:4:error: recursive dependency detected!
package/openssl/Config.in:4:	symbol BR2_PACKAGE_OPENSSL is selected by BR2_PACKAGE_LIBGCRYPT
package/libgcrypt/Config.in:1:	symbol BR2_PACKAGE_LIBGCRYPT is selected by BR2_PACKAGE_OPENSSL

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>