MUSCA_B1: Hotfix: Add attestation key material file back to BL2

tfm_initial_attestation_key_material.c is required in Musca B1 BL2
when CRYPTO_HW_ACCELERATOR_OTP_STATE is enabled. This file was
removed by accident from BL2 in [1], which failed Musca B1 build
with OTP enabled.

Add tfm_initial_attestation_key_material.c file back to Musca B1
BL2 to fix this build error.

[1]: https://review.trustedfirmware.org/c/TF-M/trusted-firmware-m/+/6731

Change-Id: Iad39ecf0e0fafd102bd67c4b7181ef17fdf894b7
Signed-off-by: Summer Qin <summer.qin@arm.com>
Co-authored-by: David Hu <david.hu@arm.com>
1 file changed