soc/mediatek/common: Move map_to_lpddr_dram_type() to common for reuse
Relocate map_to_lpddr_dram_type() to the common directory to enable
sharing across MT8189, MT8196, and other SoCs with the same
DRAM_DRAM_TYPE_T values.
BUG=b:417001336
BRANCH=none
TEST=Check boot log
LPDDR5 chan0(x16) rank0: density 16384mbits x16, MF ff rev 0800
LPDDR5 chan0(x16) rank1: density 16384mbits x16, MF ff rev 0800
LPDDR5 chan1(x16) rank0: density 16384mbits x16, MF ff rev 0800
LPDDR5 chan1(x16) rank1: density 16384mbits x16, MF ff rev 0800
Signed-off-by: Crystal Guo <crystal.guo@mediatek.corp-partner.google.com>
Change-Id: I53d70aa26991f89ef05e56f8b7d972f8208d2484
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88123
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Yidi Lin <yidilin@google.com>
812379f500