Set ro.*.build.version.sdk_minor sysprop

Transform the build flag RELEASE_PLATFORM_SDK_MINOR_VERSION into system
properties.

Bug: 350458259
Test: m
Flag: EXEMPT can't flag Makefiles
Ignore-AOSP-First: internal to keep in sync with related CLs that are not AOSP first
Change-Id: I41ee7baf3d459cc3120a3ef6eb2436bd89253870
diff --git a/core/version_util.mk b/core/version_util.mk
index 0e34634..1d8c643 100644
--- a/core/version_util.mk
+++ b/core/version_util.mk
@@ -61,6 +61,12 @@
 PLATFORM_SDK_VERSION := $(RELEASE_PLATFORM_SDK_VERSION)
 .KATI_READONLY := PLATFORM_SDK_VERSION
 
+ifdef PLATFORM_SDK_MINOR_VERSION
+  $(error Do not set PLATFORM_SDK_MINOR_VERSION directly. Use RELEASE_PLATFORM_SDK_MINOR_VERSION. value: $(PLATFORM_SDK_MINOR_VERSION))
+endif
+PLATFORM_SDK_MINOR_VERSION := $(RELEASE_PLATFORM_SDK_MINOR_VERSION)
+.KATI_READONLY := PLATFORM_SDK_MINOR_VERSION
+
 ifdef PLATFORM_SDK_EXTENSION_VERSION
   $(error Do not set PLATFORM_SDK_EXTENSION_VERSION directly. Use RELEASE_PLATFORM_SDK_EXTENSION_VERSION. value: $(PLATFORM_SDK_EXTENSION_VERSION))
 endif