clang-tidy: Enable readability-implicit-bool-conversion check

This check can be used to find implicit conversions between
built-in types and booleans.
the following conversion types are checked:
- integer expression/literal to boolean
- floating expression/literal to boolean
- pointer/pointer to member/nullptr/NULL to boolean
- boolean expression/literal to integer
- boolean expression/literal to floating

Signed-off-by: George Liu <liuxiwei@ieisystem.com>
Change-Id: I3f4bc8902e255d1c85ec57f47d9532ee7326a442
diff --git a/.clang-tidy b/.clang-tidy
index 775d2d3..17375d0 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -260,6 +260,7 @@
 readability-deleted-default,
 readability-function-size,
 readability-identifier-naming,
+readability-implicit-bool-conversion,
 readability-isolate-declaration,
 readability-make-member-function-const,
 readability-misleading-indentation,