uhd: mpm: apply clang-format to all files

Applying formatting changes to all .cpp and .hpp files in the following
directories:
```
find host/examples/ -iname *.hpp -o -iname *.cpp | \
    xargs clang-format -i -style=file
find host/tests/ -iname *.hpp -o -iname *.cpp | \
    xargs clang-format -i -style=file
find host/lib/usrp/dboard/neon/ -iname *.hpp -o -iname *.cpp | \
    xargs clang-format -i -style=file
find host/lib/usrp/dboard/magnesium/ -iname *.hpp -o -iname *.cpp | \
    xargs clang-format -i -style=file
find host/lib/usrp/device3/ -iname *.hpp -o -iname *.cpp | \
    xargs clang-format -i -style=file
find host/lib/usrp/mpmd/ -iname *.hpp -o -iname *.cpp | \
    xargs clang-format -i -style=file
find host/lib/usrp/x300/ -iname *.hpp -o -iname *.cpp | \
    xargs clang-format -i -style=file
find host/utils/ -iname *.hpp -o -iname *.cpp | \
    xargs clang-format -i -style=file
find mpm/ -iname *.hpp -o -iname *.cpp | \
    xargs clang-format -i -style=file
```

Also formatted host/include/, except Cpp03 was used as a the language
standard instead of Cpp11.
```
sed -i 's/ Cpp11/ Cpp03/g' .clang-format
find host/include/ -iname *.hpp -o -iname *.cpp | \
    xargs clang-format -i -style=file
```

Formatting style was designated by the .clang-format file.

1 files changed, 4 insertions, 3 deletions

diff --git a/host/tests/narrow_cast_test.cpp b/host/tests/narrow_cast_test.cpp
index c108c310e..3ea7db1bf 100644
--- a/host/tests/narrow_cast_test.cpp
+++ b/host/tests/narrow_cast_test.cpp
@@ -11,11 +11,12 @@
 
 using namespace uhd;
 
-BOOST_AUTO_TEST_CASE(test_narrow){
+BOOST_AUTO_TEST_CASE(test_narrow)
+{
     uint16_t x = 5;
-    uint8_t y = narrow_cast<uint8_t>(x);
+    uint8_t y  = narrow_cast<uint8_t>(x);
     BOOST_CHECK_EQUAL(x, y);
 
-    BOOST_CHECK_THROW(narrow<uint8_t>(uint16_t(1<<10)), narrowing_error);
+    BOOST_CHECK_THROW(narrow<uint8_t>(uint16_t(1 << 10)), narrowing_error);
     BOOST_CHECK_THROW(narrow<uint8_t>(int8_t(-1)), narrowing_error);
 }