api: Convert to Kconfig

Now that we have a Kconfig for the API, convert the two boards that
are using this to Kconfig and remove CONFIG_API from the whitelist.

Signed-off-by: Emmanuel Vadot <manu@bidouilliste.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

configs/PMC440_defconfig

@@ -24,3 +24,4 @@ CONFIG_SYS_NS16550=y
 CONFIG_USB=y
 CONFIG_USB_STORAGE=y
 CONFIG_OF_LIBFDT=y
+CONFIG_API=y

configs/lsxhl_defconfig

@@ -23,3 +23,4 @@ CONFIG_SYS_NS16550=y
 CONFIG_USB=y
 CONFIG_USB_STORAGE=y
 CONFIG_OF_LIBFDT=y
+CONFIG_API=y

include/configs/PMC440.h

@@ -385,6 +385,4 @@
 #define CONFIG_KGDB_BAUDRATE	230400	/* speed to run kgdb serial port */
 #endif
 
-#define CONFIG_API		1
-
 #endif /* __CONFIG_H */

include/configs/lsxl.h

@@ -38,11 +38,6 @@
 #define CONFIG_SYS_NO_FLASH
 
 /*
- * Enable u-boot API for standalone programs.
- */
-#define CONFIG_API
-
-/*
  * Commands configuration
  */
 #define CONFIG_CMD_ENV

scripts/config_whitelist.txt

@@ -102,7 +102,6 @@ CONFIG_APBH_DMA_BURST8
 CONFIG_APER_0_BASE
 CONFIG_APER_1_BASE
 CONFIG_APER_SIZE
-CONFIG_API
 CONFIG_APUS_FAST_EXCEPT
 CONFIG_AP_SH4A_4A
 CONFIG_ARCH_ADPAG101P