kernel: modules: package OP-TEE and fTPM modules

kernel: modules: package OP-TEE and fTPM modules

Add kmod packages to support accessing the fTPM (in-firmware TPM) which
can be implemented in the boot firmware of most modern platforms.

 - kmod-optee: Open Portable Trusted Execution Environment
 - kmod-optee-rng: OP-TEE random number generator client
 - kmod-rtc-optee: OP-TEE real-time clock client
 - kmod-scmi-transport-optee: SCMI OP-TEE transport
 - kmod-tee: Generic Trusted Execution Environment
 - kmod-tee-stmm-efi: EFI variable service Trusted Application
 - kmod-tpm-ftpm-tee: Microsoft fTPM Trusted Application

Using the TPM 2.0 can be useful for various security applications,
such as encrypting on-disk credentials. OP-TEE itself alone is also
useful as it can provide a PKCS#11 token for authentication (eg. to
connect to a VPN) and significantly lower the risk of leaking secrets
used for authentication. Also, on some platforms RNG and RTC can only be
accessed via OP-TEE, and some ARM SystemReady platforms require EFI
variables to be access via a TA.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>