Revert "coresight: Return the pointer of @pdata when not "fwnode""

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8BOB3


CVE: NA

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The mainline`s patch [1] fix the issue, revert the private patch.
This reverts commit d0904fb6.

[1] a385634e45ff "coresight: trbe: Add a representative coresight_platform_data for TRBE"

Signed-off-by: Junhao He <hejunhao3@huawei.com>