Use standard SPDX license identifier in README.chromium

This CL updates the "License:" field to a standard SPDX license identifier.
See https://spdx.org/licenses/


Bug: 421989260, 421988966
Change-Id: I1c54529fcd41fd3c8c1d6fcb0c13206efd361683
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/75948
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Geoff Lang <geofflang@google.com>
Tested-by: Shahbaz Youssefi <syoussefi@google.com>
Reviewed-by: Shahbaz Youssefi <syoussefi@google.com>
Commit-Queue: Shahbaz Youssefi <syoussefi@google.com>

third_party/subzero/bloat/README.chromium

diff --git a/third_party/subzero/bloat/README.chromium b/third_party/subzero/bloat/README.chromium
index 07fba2c..8b4ef4d 100644
--- a/third_party/subzero/bloat/README.chromium
+++ b/third_party/subzero/bloat/README.chromium
@@ -4,7 +4,7 @@
 Version: N/A
 Date: 2013-04-23
 Revision: 2c22b831f081402a9160adb957b64b83316202e1
-License: Apache 2.0
+License: Apache-2.0
 Security Critical: no
 Shipped: no
 
@@ -22,7 +22,7 @@
 Version: N/A
 Date: 2013-04-23
 Revision: a2fa353833eca1a4821ba4c93fb6a7d546aed02a
-License: Apache 2.0
+License: Apache-2.0
 Security Critical: no
 Shipped: no