Add initial support for Ingenic X1000 SoC and Y&A CU Neo board v7.

From: åçæ (Zhou Yanjie)
Date: Tue Dec 10 2019 - 07:03:37 EST


v7->v8:
1.Change "mac@134b0000" to "ethernet@134b0000", change "msc@13450000"
to "mmc@13450000", change "msc@13460000" to "mmc@13460000".
2.Merge [5/6] in v7 to [1/4] of v8, merge [6/6] in v7 to [4/4] of v8.