spl: Move SPL_MMC_TINY option to appear under SPL menu

The SPL_MMC_TINY implements feature-reduced MMC support
on SPL, and as such, it's more consistent and convenient
to find it as part of the SPL configuration.
Signed-off-by: NEzequiel Garcia <ezequiel@collabora.com>

common/spl/Kconfig

@@ -572,6 +572,23 @@ config SPL_MMC_SUPPORT
 	  this option to build the drivers in drivers/mmc as part of an SPL
 	  build.
 
+config SPL_MMC_TINY
+	bool "Tiny MMC framework in SPL"
+	depends on SPL_MMC_SUPPORT
+	default n
+	help
+	  Enable MMC framework tinification support. This option is useful if
+	  if your SPL is extremely size constrained. Heed the warning, enable
+	  this option if and only if you know exactly what you are doing, if
+	  you are reading this help text, you most likely have no idea :-)
+
+	  The MMC framework is reduced to bare minimum to be useful. No malloc
+	  support is needed for the MMC framework operation with this option
+	  enabled. The framework supports exactly one MMC device and exactly
+	  one MMC driver. The MMC driver can be adjusted to avoid any malloc
+	  operations too, which can remove the need for malloc support in SPL
+	  and thus further reduce footprint.
+
 config SPL_MMC_WRITE
 	bool "MMC/SD/SDIO card support for write operations in SPL"
 	depends on SPL_MMC_SUPPORT

drivers/mmc/Kconfig

@@ -158,21 +158,6 @@ config MMC_TRACE
 
 	  If you need to see the MMC core message, say Y.
 
-config SPL_MMC_TINY
-	bool "Tiny MMC framework in SPL"
-	help
-	  Enable MMC framework tinification support. This option is useful if
-	  if your SPL is extremely size constrained. Heed the warning, enable
-	  this option if and only if you know exactly what you are doing, if
-	  you are reading this help text, you most likely have no idea :-)
-
-	  The MMC framework is reduced to bare minimum to be useful. No malloc
-	  support is needed for the MMC framework operation with this option
-	  enabled. The framework supports exactly one MMC device and exactly
-	  one MMC driver. The MMC driver can be adjusted to avoid any malloc
-	  operations too, which can remove the need for malloc support in SPL
-	  and thus further reduce footprint.
-
 config MMC_DAVINCI
 	bool "TI DAVINCI Multimedia Card Interface support"
 	depends on ARCH_DAVINCI