Redeclare DPCTLDevice_GetNativeVectorWidth* from SyclInterface lib

Also replaced one cpdef with intended cdef

Author: oleksandr-pavlyk

dpctl/_backend.pxd

@@ -186,7 +186,14 @@ cdef extern from "syclinterface/dpctl_sycl_device_interface.h":
     cdef uint32_t DPCTLDevice_GetPreferredVectorWidthFloat(const DPCTLSyclDeviceRef DRef)
     cdef uint32_t DPCTLDevice_GetPreferredVectorWidthDouble(const DPCTLSyclDeviceRef DRef)
     cdef uint32_t DPCTLDevice_GetPreferredVectorWidthHalf(const DPCTLSyclDeviceRef DRef)
-    cpdef bool DPCTLDevice_HasAspect(const DPCTLSyclDeviceRef, _aspect_type)
+    cdef uint32_t DPCTLDevice_GetNativeVectorWidthChar(const DPCTLSyclDeviceRef DRef)
+    cdef uint32_t DPCTLDevice_GetNativeVectorWidthShort(const DPCTLSyclDeviceRef DRef)
+    cdef uint32_t DPCTLDevice_GetNativeVectorWidthInt(const DPCTLSyclDeviceRef DRef)
+    cdef uint32_t DPCTLDevice_GetNativeVectorWidthLong(const DPCTLSyclDeviceRef DRef)
+    cdef uint32_t DPCTLDevice_GetNativeVectorWidthFloat(const DPCTLSyclDeviceRef DRef)
+    cdef uint32_t DPCTLDevice_GetNativeVectorWidthDouble(const DPCTLSyclDeviceRef DRef)
+    cdef uint32_t DPCTLDevice_GetNativeVectorWidthHalf(const DPCTLSyclDeviceRef DRef)
+    cdef bool DPCTLDevice_HasAspect(const DPCTLSyclDeviceRef, _aspect_type)
     cdef uint32_t DPCTLDevice_GetMaxReadImageArgs(const DPCTLSyclDeviceRef DRef)
     cdef uint32_t DPCTLDevice_GetMaxWriteImageArgs(const DPCTLSyclDeviceRef DRef)
     cdef size_t DPCTLDevice_GetImage2dMaxWidth(const DPCTLSyclDeviceRef DRef)