clk: samsung: exynos990: Add PERIC0 and PERIC1 clock support

Add clock controller support for Peripheral Connectivity 0 and 1 blocks.
These provide clocks for USI, I2C and UART peripherals.

Some clocks need to be marked as critical to prevent system hang when
disabled.

Signed-off-by: Denzeel Oliva <wachiturroxd150@gmail.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Author: Sota4Ever