kconfig: Replace defconfig singe-symbol 'if's with 'depends on'

Same deal as in commit eddd98f ("kconfig: Replace some single-symbol
'if's with 'depends on'"), for all symbols defined within defconfig
files. See that commit for an explanation.

Maybe 'if's were used originally to mirror the 'if's in the main Kconfig
files, and then it got copied around by people assuming 'if' must work
differently from 'depends on'. It doesn't match in every spot at least.
Better to keep it simple and just consistently use 'depends on' when
it's a single symbol/choice I think. Helps reinforce that 'if' isn't
magic too.

Verified by printing all Kconfig menu nodes (symbols, choices, menus,
etc.) before and after the change and diffing (should show no
difference).

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>

soc/arm/st_stm32/common/Kconfig.defconfig.series

@@ -12,19 +12,13 @@ config CORTEX_M_SYSTICK
 	default n if STM32_LPTIM_TIMER
 	default y if !STM32_LPTIM_TIMER
 
-if CLOCK_CONTROL
-
 config CLOCK_CONTROL_STM32_CUBE
 	default y
-
-endif # CLOCK_CONTROL
-
-if SERIAL
+	depends on CLOCK_CONTROL
 
 config UART_STM32
 	default y
-
-endif # SERIAL
+	depends on SERIAL
 
 if GPIO
 
@@ -42,12 +36,9 @@ config GPIO_STM32_PORTC
 
 endif # GPIO
 
-if PINMUX
-
 config PINMUX_STM32
 	default y
-
-endif # PINMUX
+	depends on PINMUX
 
 if WATCHDOG
 
@@ -59,54 +50,33 @@ config WWDG_STM32
 
 endif # WATCHDOG
 
-if PWM
-
 config PWM_STM32
 	default y
-
-endif # PWM
-
-if SPI
+	depends on PWM
 
 config SPI_STM32
 	default y
-
-endif # SPI
-
-if I2C
+	depends on SPI
 
 config I2C_STM32
 	default y
-
-endif
-
-if USB
+	depends on I2C
 
 config USB_DC_STM32
 	default y
-
-endif # USB
-
-if COUNTER
+	depends on USB
 
 config COUNTER_RTC_STM32
 	default y
-
-endif # COUNTER
-
-if CAN
+	depends on COUNTER
 
 config CAN_STM32
 	default y
-
-endif
-
-if ADC
+	depends on CAN
 
 config ADC_STM32
 	default y
-
-endif # ADC
+	depends on ADC
 
 if DMA