[MediaVision] Applied coding rules

[MediaVision] Applied coding rules

1. Keyword space rule
2. Maintain the consistency between <param> tag and actual parameters
3. Write the <returns> tag if a method has return value
4. Write the closing brace, followed by a blank line
5. Closing parenthesis space rule

Change-Id: I79a30f6a690e4beef26247cd1419edfd802ad082
Signed-off-by: Tae-Young Chung <ty83.chung@samsung.com>