arm64: defconfig: enable debugging of cpuidle governor in SVM

Enable idle state failure statistics and tracing in menu governor to
debug cpuidle related issues in SVM. Enable FTRACE dependency for the
config items.

Change-Id: I635a1c06db528358113672daa1ccb78078c79bf3
Signed-off-by: Lina Iyer <ilina@codeaurora.org>