regulator: tps6507x: Use "IS_ENABLED" for DT code.
regulator: tps6507x: Use "IS_ENABLED" for DT code.

Instead of "#ifdef CONFIG_OF" use "IS_ENABLED(CONFIG_OF)"
option for DT code to avoid if-deffery in code.
Also, modify code as per coding style.

Signed-off-by: Manish Badarkhe <227975c36604f4edcba69fb2c44a00e46ac90635@gmail.com>
Signed-off-by: Mark Brown <b51b9a92386687a9ac927cebfa0f978adeb8cea5@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs