qseecom: fix macro QSEECOM_ALIGN definition issue

In macro QSEECOM_ALIGN, change (x + QSEECOM_ALIGN_SIZE) to
(x + QSEECOM_ALIGN_MASK); otherwise, when x is already aligned,
QSEECOM_ALIGN(x) will get (x + QSEECOM_ALIGN_SIZE), but it should
be x. Also, remove the dulplicate QSEECOM_ALIGN definition
in hdcp.c and mpq_sdmx.c, since they already include
"qseecom_kernel.h"

Change-Id: I9dbcadb618372fce71c2ff7ab62ca691afe7c7fa
Signed-off-by: Zhen Kong <zkong@codeaurora.org>