Simplify DEFAULT_SMALL usage in Kconfig

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

arch/arm/src/nrf52/Kconfig

@@ -392,8 +392,7 @@ menu "GPIO Interrupt Configuration"
 
 config NRF52_PER_PIN_INTERRUPTS
 	bool "Per-pin interrupt callbacks"
-	default n if DEFAULT_SMALL
-	default y if !DEFAULT_SMALL
+	default !DEFAULT_SMALL
 	depends on NRF52_GPIOTE
 	---help---
 		The GPIOTE peripheral supports a limited number of channels which can

fs/Kconfig

@@ -66,8 +66,7 @@ config FS_NEPOLL_DESCRIPTORS
 
 config DISABLE_PSEUDOFS_OPERATIONS
 	bool "Disable pseudo-filesystem operations"
-	default y if DEFAULT_SMALL
-	default n if !DEFAULT_SMALL
+	default DEFAULT_SMALL
 	---help---
 		Disable certain operations on pseudo-file systems include mkdir,
 		rmdir, unlink, and rename.  These are necessary for the logical

libs/libc/stdio/Kconfig

@@ -60,8 +60,7 @@ config LIBC_FLOATINGPOINT
 
 config LIBC_LONG_LONG
 	bool "Enable long long support in printf"
-	default y if !DEFAULT_SMALL
-	default n if DEFAULT_SMALL
+	default !DEFAULT_SMALL
 	---help---
 		Enables support for long long formats in printf, sscanf, etc. is
 		enabled.  This is enabled by default but if you are trying to

sched/Kconfig

@@ -17,8 +17,7 @@ if DISABLE_OS_API
 
 config DISABLE_POSIX_TIMERS
 	bool "Disable POSIX timers"
-	default y if DEFAULT_SMALL
-	default n if !DEFAULT_SMALL
+	default DEFAULT_SMALL
 	---help---
 		Disable support for the the entire POSIX timer family
 		including timer_create(), timer_gettime(), timer_settime(),
@@ -29,18 +28,15 @@ config DISABLE_POSIX_TIMERS
 
 config DISABLE_PTHREAD
 	bool "Disable pthread support"
-	default y if DEFAULT_SMALL
-	default n if !DEFAULT_SMALL
+	default DEFAULT_SMALL
 
 config DISABLE_MQUEUE
 	bool "Disable POSIX message queue support"
-	default y if DEFAULT_SMALL
-	default n if !DEFAULT_SMALL
+	default DEFAULT_SMALL
 
 config DISABLE_ENVIRON
 	bool "Disable environment variable support"
-	default y if DEFAULT_SMALL
-	default n if !DEFAULT_SMALL
+	default DEFAULT_SMALL
 
 endif # DISABLE_OS_API