plat: qti: Fix build failure

Fixed build failure due to the commit:905f93c77 by removing
the inclusion of non-existent 'stdinit.h' file.

Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I8e3ca69c016b7a2354c58c4d384a492631c36286
2 files changed