soc: qcom: glink: Free data memory before freeing intent

Data of intent is not freed even in purge_intent_list. This results
in memory leak.

Kfree is done for data before freeing intent.

CRs-Fixed: 2116744
Change-Id: Ib99261208df1cc9b63b4cd0a35ac0c7942efb4a8
Signed-off-by: Dhoat Harpal <hdhoat@codeaurora.org>