Spirv_intrinsics: Add support of type specifier to spirv_type

Previously, spirv_type doesn't accept type specifier as its parameter.
With this change, we can input non-array type specifier. This is because
some SPIR-V type definition intructions often need to reference other
SPIR-V types as its source operands. We add the support to facilitate
such usage.

Test/spv.intrinsicsSpirvTypeWithTypeSpecifier.vert

@@ -0,0 +1,25 @@
+#version 450 core
+
+#extension GL_ARB_gpu_shader_int64: enable
+#extension GL_EXT_buffer_reference: enable
+#extension GL_EXT_spirv_intrinsics: enable
+
+#define CapabilityPhysicalStorageBufferAddresses   5347
+#define StorageClassPhysicalStorageBuffer          5349
+#define OpTypePointer                              32
+#define OpLoad                                     61
+#define OpConvertUToPtr                            120
+
+#define uintStoragePtr spirv_type(extensions = ["SPV_EXT_physical_storage_buffer", "SPV_KHR_variable_pointers"], capabilities = [CapabilityPhysicalStorageBufferAddresses], id = OpTypePointer, StorageClassPhysicalStorageBuffer, uint)
+
+// Just to enable the memory model of physical storage buffer
+layout(buffer_reference, std430) buffer Dummy {
+  uint dummy;
+};
+
+spirv_instruction(id = OpLoad) uint loadUint(uintStoragePtr pointer, spirv_literal uint memoryOperands, spirv_literal uint alignment);
+spirv_instruction(id = OpConvertUToPtr) uintStoragePtr convertToPtr(uint64_t value);
+
+void main() {
+  uint value = loadUint(convertToPtr(1), 0x2, 32);
+}