dt-bindings: clock: exynos850: Add TMU clock

Add a constant for TMU PCLK clock. It acts simultaneously as an
interface clock (to access TMU registers) and an operating clock which
makes TMU IP-core functional.

Signed-off-by: Sam Protsenko <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Krzysztof Kozlowski <[e-mail]>

include/dt-bindings/clock/exynos850.h

···
 #define CLK_GOUT_UART_PCLK		32
 #define CLK_GOUT_WDT0_PCLK		33
 #define CLK_GOUT_WDT1_PCLK		34
+#define CLK_GOUT_BUSIF_TMU_PCLK		35
 
 /* CMU_CORE */
 #define CLK_MOUT_CORE_BUS_USER		1