qcacld-3.0: set CONFIG_WLAN_DIAG_VERSION to y in peach config
Currently the CONFIG_WLAN_DIAG_VERSION is not being set in the
peach defconfig, causing compilation errors for peach builds.
Fix this by replacing duplicate CONFIG_WLAN_DEBUG_VERSION
with CONFIG_WLAN_DIAG_VERSION.
Change-Id: I1fc2fcfc987d63c3f038e41652ea4c43667bbe42
CRs-Fixed: 3483501