mediatek: Add Secure Boot support patches

Add secure data storage support. Patches from MTK:

• 0007_add_mtk_secure_data_encrypt_sip_call.patch
• 0010_process_derived-key_source_using_SEJ.patch
• 0012_add_PREPARE_SECURE_DATA_option.patch

Add prebuilt crypto library
Crypto library needed for SECURE_DATA enabled builds.
Comes from MTK secure boot patches.