Change PMU event counter values to use 64-bit

The PMU event counter value is an accumulation of 32-bit values during
the inference and to ensure the total value fits in the rpmsg message
and UAPI, the variable holding the value has been changed to 64-bit.

The driver library, Python wrapper and inference runner have been
changed accordingly to support the 64-bit values.

Change-Id: I09a8e45eb75800c8a787f83abff5a3693148cc15
Signed-off-by: Mikael Olsson <mikael.olsson@arm.com>
diff --git a/utils/inference_runner/inference_runner.cpp b/utils/inference_runner/inference_runner.cpp
index 721cd57..d2546e2 100644
--- a/utils/inference_runner/inference_runner.cpp
+++ b/utils/inference_runner/inference_runner.cpp
@@ -297,7 +297,7 @@
                 if (std::count(enabledCounters.begin(), enabledCounters.end(), 0) <
                     Inference::getMaxPmuEventCounters()) {
 
-                    const std::vector<uint32_t> pmus = inference->getPmuCounters();
+                    const std::vector<uint64_t> pmus = inference->getPmuCounters();
                     cout << "PMUs : [";
                     for (auto p : pmus) {
                         cout << " " << p;