[SYCL][NFC] Update Attribute Document (#3102)

We removed the following restrictions on #1878

// Allow the following kernel attributes only on lambda functions and
// function objects that are called directly from a kernel (i.e. the one
// passed to the parallel_for function). For all other cases,
// emit a warning and ignore.

1. SYCLIntelKernelArgsRestrictAttr
2. SYCLIntelNumSimdWorkItemsAttr
3. SYCLIntelMaxWorkGroupSizeAttr
4. SYCLIntelMaxGlobalWorkDimAttr

This patch updates the attribute document to reflect the changes since
we do not ignore the kernel attributes anymore if it is applied to a function
called from a device kernel and the attribute gets propagated to a kernel.

Signed-off-by: Soumi Manna <[email protected]>

Author: smanna12

clang/include/clang/Basic/AttrDocs.td

@@ -2199,7 +2199,7 @@ attribute was applied. This effect is equivalent to annotating restrict on
 **all** kernel pointer arguments in an OpenCL or SPIR-V kernel.
 
 If ``intel::kernel_args_restrict`` is applied to a function called from a device
-kernel, the attribute is ignored and it is not propagated to a kernel.
+kernel, the attribute is not ignored and it is propagated to the kernel.
 
 The attribute forms an unchecked assertion, in that implementations
 do not need to check/confirm the pre-condition in any way. If a user applies
@@ -2229,7 +2229,7 @@ def SYCLIntelNumSimdWorkItemsAttrDocs : Documentation {
 Applies to a device function/lambda function. Indicates the number of work
 items that should be processed in parallel. Valid values are positive integers.
 If ``intel::num_simd_work_items`` is applied to a function called from a
-device kernel, the attribute is ignored and it is not propagated to a kernel.
+device kernel, the attribute is not ignored and it is propagated to the kernel.
   }];
 }
 
@@ -2243,7 +2243,7 @@ clusters handle stalls using a stall-enable signal to freeze computation
 within the cluster. This attribute is ignored on the host.
 
 If ``intel::use_stall_enable_clusters`` is applied to a function called from a device
-kernel, the attribute is ignored and it is not propagated to a kernel.
+kernel, the attribute is ignored and it is not propagated to the kernel.
 
 The ``intel::use_stall_enable_clusters`` attribute takes no argument and has an effect
 when applied to a function, and no effect otherwise.
@@ -2305,7 +2305,7 @@ of a work group. Values must be positive integers. This is similar to
 reqd_work_group_size, but allows work groups that are smaller or equal to the
 specified sizes.
 If ``intel::max_work_group_size`` is applied to a function called from a
-device kernel, the attribute is ignored and it is not propagated to a kernel.
+device kernel, the attribute is not ignored and it is propagated to the kernel.
   }];
 }
 
@@ -2321,7 +2321,7 @@ range of [0, 3]. A kernel with max_global_work_dim(0) must be invoked with a
 ``cl::reqd_work_group_size`` are applied to the kernel as well - they shall
 have arguments of (1, 1, 1).
 If ``intel::max_global_work_dim`` is applied to a function called from a
-device kernel, the attribute is ignored and it is not propagated to a kernel.
+device kernel, the attribute is not ignored and it is propagated to the kernel.
   }];
 }