Debug symbols in installed kernel modules consume space
in the target filesystem, so strip them. Modules with
debug symbols should be present in the KERNEL_OBJ
location for debug purposes. 

(cherry picked from commit bb77a757)

Change-Id: I8585684cda6292ff4dbd0a2fac3f6991da845c6e
CRs-fixed: 400053
Signed-off-by: Nagender Telkar <ntelkar@codeaurora.org>