event: Correct dependencies on the EVENT framework

The event framework is just that, a framework. Enabling it by itself
does nothing, so we shouldn't ask the user about it. Reword (and correct
typos) around this the option and help text. This also applies to
DM_EVENT and EVENT_DYNAMIC. Only EVENT_DEBUG and CMD_EVENT should be
visible to the user to select, when EVENT is selected.

With this, it's time to address the larger problems. When functionality
uses events, typically via EVENT_SPY, the appropriate framework then
must be select'd and NOT imply'd. As the functionality will cease to
work (and so, platforms will fail to boot) this is non-optional and
where select is appropriate. Audit the current users of EVENT_SPY to
have a more fine-grained approach to select'ing the framework where
used. Also ensure the current users of event_register and also select
EVENT_DYNAMIC.

Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reported-by: Oliver Graute <Oliver.Graute@kococonnector.com>
Reported-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Fixes: 7fe32b3442f0 ("event: Convert arch_cpu_init_dm() to use events")
Fixes: 42fdcebf859f ("event: Convert misc_init_f() to use events")
Fixes: c5ef2025579e ("dm: fix DM_EVENT dependencies")
Signed-off-by: Tom Rini <trini@konsulko.com>
Tested-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Fabio Estevam <festevam@denx.de>
diff --git a/arch/Kconfig b/arch/Kconfig
index 8fb87b7..d30676a 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -93,7 +93,7 @@
 	bool "Nios II architecture"
 	select CPU
 	select DM
-	imply DM_EVENT
+	select DM_EVENT
 	select OF_CONTROL
 	select SUPPORT_OF_CONTROL
 	imply CMD_DM
@@ -111,9 +111,9 @@
 	select SUPPORT_OF_CONTROL
 	select OF_CONTROL
 	select DM
+	select DM_EVENT
 	imply SPL_SEPARATE_BSS if SPL
 	imply DM_SERIAL
-	imply DM_EVENT
 	imply DM_MMC
 	imply DM_SPI
 	imply DM_SPI_FLASH
@@ -136,6 +136,7 @@
 	select BZIP2
 	select CMD_POWEROFF
 	select DM
+	select DM_EVENT
 	select DM_FUZZING_ENGINE
 	select DM_GPIO
 	select DM_I2C
@@ -240,7 +241,6 @@
 	imply CMD_SF
 	imply CMD_SF_TEST
 	imply CMD_ZBOOT
-	imply DM_EVENT
 	imply DM_GPIO
 	imply DM_KEYBOARD
 	imply DM_MMC