Enable clang-format for frameworks/base

Copy and paste internal setup to AOSP. Not include folders not in AOSP
yet.

Bug: None
Test: repo upload
Change-Id: I08b8c6d1bae7d1954847c207ef8e6d80373b2d05
Merged-In: I08b8c6d1bae7d1954847c207ef8e6d80373b2d05

.clang-format

+BasedOnStyle: Google
+
+AccessModifierOffset: -4
+AlignOperands: false
+AllowShortFunctionsOnASingleLine: Inline
+AlwaysBreakBeforeMultilineStrings: false
+ColumnLimit: 100
+CommentPragmas: NOLINT:.*
+ConstructorInitializerIndentWidth: 6
+ContinuationIndentWidth: 8
+IndentWidth: 4
+PenaltyBreakBeforeFirstCallParameter: 100000
+SpacesBeforeTrailingComments: 1

PREUPLOAD.cfg

+[Builtin Hooks]
+clang_format = true
+
+[Builtin Hooks Options]
+# Only turn on clang-format check for the following subfolders.
+clang_format = --commit ${PREUPLOAD_COMMIT} --style file --extensions c,h,cc,cpp
+               cmds/hid/
+               cmds/input/
+               core/jni/
+               libs/input/
+               services/core/jni/
+
 [Hook Scripts]
 checkstyle_hook = ${REPO_ROOT}/prebuilts/checkstyle/checkstyle.py --sha ${PREUPLOAD_COMMIT}