android: minor fix for handling of androidboot.low_ram

Signed-off-by: hmz007 <hmz007@gmail.com>

hardware/rockchip/hwcomposer/drmhwc2/drmhwctwo.cpp

@@ -1367,7 +1367,7 @@ HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayConfigs(uint32_t *num_configs,
        * RK3588/RK3576：Limit to 4096x2160 if large than 2160p
        * Other:  Limit to 1920x1080 if large than 2160p
        */
-      bool low_ram_device = property_get_bool("ro.config.low_ram", false);
+      bool low_ram_device = property_get_bool("ro.boot.low_ram", false);
       if (low_ram_device) {
         if (ctx_.framebuffer_height >= 2160 && ctx_.framebuffer_width >= ctx_.framebuffer_height) {
           HWC2_ALOGD_IF_DEBUG("Limit framebuffer for low-ram device");

system/core/init/property_service.cpp

@@ -1315,9 +1315,7 @@ static void ExportKernelBootProps() {
 static void ExportLowRamProps() {
     std::string value = GetProperty("ro.boot.low_ram", "false");
     if (value == "1" || value == "true" || value == "yes") {
-        InitPropertySet("ro.config.low_ram", "true");
         InitPropertySet("ro.config.per_app_memcg", "false");
-        InitPropertySet("dalvik.vm.systemservercompilerfilter", "speed-profile");
         InitPropertySet("dalvik.vm.heapgrowthlimit", "128m");
         InitPropertySet("dalvik.vm.heapsize", "384m");
     }

u-boot/arch/arm/mach-rockchip/board.c

@@ -1369,7 +1369,8 @@ static void bootargs_add_android(bool verbose)
 
 static void bootargs_add_low_mem(void)
 {
-	if (gd->ram_size < SZ_3G) {
+	int low_ram = env_get_yesno("low_ram");
+	if (low_ram && gd->ram_size < SZ_3G) {
 		env_update("bootargs", "androidboot.low_ram=1");
 	}
 }