i965: Fix the description of chipset 8086:3E98

According to Intel website [1], the description of chipset 8086:3E98 is
Intel(R) UHD Graphics 630.  Besides, xserver also mentions it as
"Intel(R) UHD Graphics 630 (Coffeelake 3x8 GT2)" in commit d3a26bbf
(DRI2: Add another Coffeelake PCI ID) [2].

This patch modifies the description to sync with xserver.

[1]: https://ark.intel.com/content/www/us/en/ark/products/134896/intel-core-i5-9600k-processor-9m-cache-up-to-4-60-ghz.html
[2]: xorg/xserver@d3a26bbf

Fixes: commit 44f1dcf9 "i965: Add a new CFL PCI ID."
Signed-off-by: Jian-Hong Pan <jian-hong@endlessm.com>
15 jobs for !617 with 3E98 in 15 minutes and 58 seconds (queued for 3 minutes and 26 seconds)
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