misc: qseecom: fix wipe-key api for PFE key

The qseecom_wipe_key() api allows both FDE and PFE usage,
It is calling  __qseecom_delete_saved_key()  api
that should also allow both.

Change-Id: I2ae583977e7e4958e6dd8a939af74ac62a147895
Signed-off-by: Amir Samuelov <amirs@codeaurora.org>
qseecom: change return value to 0 if app id exists when loading app

Currently qseecom will return the app_id (>0) instead of 0 if the
app id already exists when loading app. Then the userspace client
will release qseecom handle if an non-zero return value is obtained.
Make a change to let qseecom return 0 when app id exist so as to
avoid the incorrect qseecom release.

Change-Id: I03b0b0ae95b2e043fda972aa3b613e7df585154a
Signed-off-by: Zhen Kong <zkong@codeaurora.org>
qseecom: Add support to handle multiple app load & unload

Media server is associated with multiple apps on TZ-side.
Unloading a single app for clean up is not enought. QSEECOM
needs to handle the app load & unload of multiple apps
associated with the client. During app_load & app_unload
along with app_id, app_name should also be checked. Besides,
keymaster will not be unloaded and app search execution
during app unload is optimized.

Change-Id: Ie92e97b9154851b713a8c3394b8ed10fdbdebd2f
Signed-off-by: Zhen Kong <zkong@codeaurora.org>
Revert "qseecom: Add support to handle multiple app load & unload"

This reverts commit f856ce3045a68e12089c7dc2152f5c53bb259305.

Change-Id: I31b5994fb42118edd46e453b0d453225c92000a1
qseecom: Add support to handle multiple app load & unload

Media server is associated with multiple apps on TZ-side.
Unloading a single app for clean up is not enought. QSEECOM
needs to handle the app load & unload of multiple apps
associated with the client. During app_load & app_unload
along with app_id, app_name should also be checked. Besides,
keymaster will not be unloaded and app search execution
during app unload is optimized.

Change-Id: Ie92e97b9154851b713a8c3394b8ed10fdbdebd2f
Signed-off-by: Zhen Kong <zkong@codeaurora.org>
Signed-off-by: William Clark <wclark@codeaurora.org>
qseecom: change the number of bytes to compare app names

keymaster app has two names with different length: "keymaster" and
"keymaste". To compare the app names correctly, the shorter name
length is choosen for memcmp in __qseecom_send_cmd.

Change-Id: I5f0dff7f9756362be40cc64985b65bc2268d734f
Signed-off-by: Zhen Kong <zkong@codeaurora.org>
Signed-off-by: William Clark <wclark@codeaurora.org>