Libkernel: Implement/stub some functions (#3774)

* Define latest released firmware version, use that for sceKernelGetSystemSwVersion

I feel this is less hacky and error-prone than just returning the game firmware.

* sceKernelGetAllowedSdkVersionOnSystem

* sceKernelHasNeoMode

* sceKernelGetAppInfo stub

* sceKernelGetCurrentCpu

* fixups

* sceKernelGetMainSocId

Used by libSceAvPlayer to determine if console is a pro or not.

* Update process.cpp

* Set has_param_sfo to true

* Clang

src/core/libraries/kernel/kernel.h

@@ -36,6 +36,8 @@ struct OrbisWrapperImpl<PS4_SYSV_ABI R (*)(Args...), f> {
 
 #define ORBIS(func) (Libraries::Kernel::OrbisWrapperImpl<decltype(&(func)), func>::wrap)
 
+#define CURRENT_FIRMWARE_VERSION 0x13020011
+
 s32* PS4_SYSV_ABI __Error();
 
 struct SwVersionStruct {
@@ -51,6 +53,30 @@ struct AuthInfoData {
     u64 ucred[8];
 };
 
+struct OrbisKernelTitleWorkaround {
+    s32 version;
+    s32 align;
+    u64 ids[2];
+};
+
+struct OrbisKernelAppInfo {
+    s32 app_id;
+    s32 mmap_flags;
+    s32 attribute_exe;
+    s32 attribute2;
+    char cusa_name[10];
+    u8 debug_level;
+    u8 slv_flags;
+    u8 mini_app_dmem_flags;
+    u8 render_mode;
+    u8 mdbg_out;
+    u8 required_hdcp_type;
+    u64 preload_prx_flags;
+    s32 attribute1;
+    s32 has_param_sfo;
+    OrbisKernelTitleWorkaround title_workaround;
+};
+
 void RegisterLib(Core::Loader::SymbolsResolver* sym);
 
 } // namespace Libraries::Kernel