msm: Change vendor name from 'qcom' to 'qti' for msm_cache_erp

As we have recently moved to use 'qti' as vendor name reflect
that change for all msm_cache_erp related code.

Change-Id: I335f6e68934c166b1a4daa09ad62421f882e389e
Signed-off-by: Kumar Gala <galak@codeaurora.org>