powertop: add package

package for monitoring power consumption
001 and 002 patches are taken from Alpine Linux

Signed-off-by: Lucian Cristian <lucian.cristian@gmail.com>

utils/powertop/patches/010-src-main-Add-missing-pthread-header.patch

@@ -0,0 +1,38 @@
+From 7235a786ea30ae5ca7c1b3458ef5b2388c08dfd9 Mon Sep 17 00:00:00 2001
+From: Rosen Penev <rosenp@gmail.com>
+Date: Thu, 28 Mar 2019 18:44:27 -0700
+Subject: [PATCH] src/main: Add missing pthread header
+
+Otherwise compilation can fail with:
+
+main.cpp: In function 'void one_measurement(int, int, char*)':
+main.cpp:226:3: error: 'pthread_t' was not declared in this scope
+   pthread_t thread = 0UL;
+   ^~~~~~~~~
+main.cpp:226:3: note: suggested alternative: 'pread'
+   pthread_t thread = 0UL;
+   ^~~~~~~~~
+   pread
+
+et al.
+
+Signed-off-by: Rosen Penev <rosenp@gmail.com>
+---
+ src/main.cpp | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/main.cpp b/src/main.cpp
+index cbb7a4e..75d4202 100644
+--- a/src/main.cpp
++++ b/src/main.cpp
+@@ -39,6 +39,7 @@
+ #include <locale.h>
+ #include <sys/resource.h>
+ #include <limits.h>
++#include <pthread.h>
+ 
+ #include "cpu/cpu.h"
+ #include "process/process.h"
+-- 
+2.17.1
+