agpgart: detected ALi M???? chipset with M1621
agpgart: detected ALi M???? chipset with M1621

Add M1621 chipset name to ali-agp, preventing "Detected ALi M???? chipset"
message.

Signed-off-by: Ondrej Zary <ba324ca7b1c77fc20bb970d5aff6eea9377918a5@rainbow-software.org>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Signed-off-by: Dave Airlie <f2295d84e358395675bc8031be58672073ae065e@redhat.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas