SWDEV-436821 Update hip samples Readme files

Change-Id: I6bf3a72eac4a4242cb2dbf4e6eee73e0e1bef2ef


[ROCm/hip-tests commit: 76dd8ea569]

projects/hip-tests/samples/0_Intro/bit_extract/README.md

@@ -4,3 +4,26 @@ Show an application written directly in HIP which uses platform-specific check o
 an instruction that only exists on the AMD platform.
 
 See related [blog](http://gpuopen.com/platform-aware-coding-inside-hip/) demonstrating platform specialization.
+
+- Steps to build this sample:
+```
+$ mkdir build; cd build
+$ cmake .. -DCMAKE_PREFIX_PATH=/opt/rocm
+$ make
+```
+
+- Execute File
+```
+$ ./bit_extract
+
+pch size: 11743288
+__hipGetPCH succeeded!
+info: running on device #0
+info: allocate host mem (  7.63 MB)
+info: allocate device mem (  7.63 MB)
+info: copy Host2Device
+info: launch 'bit_extract_kernel'
+info: copy Device2Host
+info: check result
+PASSED!
+```