ARM: dts: renesas: Stop using the -u-boot DTs for build

The U-Boot build system can automatically paste -u-boot.dtsi at the
end of matching .dts during build. Stop emulating this behavior and
rename the -u-boot.dts files to -u-boot.dtsi, drop "#include...dts"
from those new u-boot.dtsi files, and update board configuration
accordingly.

The rename, '#include...dts` scrubbing and configuration update has
been done using the following script:
```
$ find . -name r[78]\*-u-boot.dts | sort -u | while read line ; do \
  git mv ${line%-u-boot.dts}-u-boot.dts ${line%-u-boot.dts}-u-boot.dtsi ; \
  done
$ sed -i '/^#include.*dts"/ d' `find . -name r[78]\*-u-boot.dtsi`
$ sed -i 's@-u-boot@@g' `git grep -li renesas configs`
```
The Salvator-X and ULCB board files have been updated manually.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Acked-by:  Adam Ford <aford173@gmail.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 08dfbdd..2da5edd 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1056,41 +1056,41 @@
 	imxrt1170-evk.dtb \
 
 dtb-$(CONFIG_RCAR_GEN2) += \
-	r8a7790-lager-u-boot.dtb \
-	r8a7790-stout-u-boot.dtb \
-	r8a7791-koelsch-u-boot.dtb \
-	r8a7791-porter-u-boot.dtb \
-	r8a7792-blanche-u-boot.dtb \
-	r8a7793-gose-u-boot.dtb \
-	r8a7794-alt-u-boot.dtb \
-	r8a7794-silk-u-boot.dtb
+	r8a7790-lager.dtb \
+	r8a7790-stout.dtb \
+	r8a7791-koelsch.dtb \
+	r8a7791-porter.dtb \
+	r8a7792-blanche.dtb \
+	r8a7793-gose.dtb \
+	r8a7794-alt.dtb \
+	r8a7794-silk.dtb
 
 dtb-$(CONFIG_RCAR_GEN3) += \
 	r8a774a1-beacon-rzg2m-kit.dtb \
 	r8a774b1-beacon-rzg2n-kit.dtb \
 	r8a774e1-beacon-rzg2h-kit.dtb \
-	r8a774a1-hihope-rzg2m-u-boot.dtb \
-	r8a774b1-hihope-rzg2n-u-boot.dtb \
-	r8a774c0-ek874-u-boot.dtb \
-	r8a774e1-hihope-rzg2h-u-boot.dtb \
-	r8a77950-ulcb-u-boot.dtb \
-	r8a77950-salvator-x-u-boot.dtb \
-	r8a77960-ulcb-u-boot.dtb \
-	r8a77960-salvator-x-u-boot.dtb \
-	r8a77965-ulcb-u-boot.dtb \
-	r8a77965-salvator-x-u-boot.dtb \
-	r8a77970-eagle-u-boot.dtb \
-	r8a77970-v3msk-u-boot.dtb \
-	r8a77980-condor-u-boot.dtb \
-	r8a77980-v3hsk-u-boot.dtb \
-	r8a77990-ebisu-u-boot.dtb \
-	r8a77995-draak-u-boot.dtb
+	r8a774a1-hihope-rzg2m.dtb \
+	r8a774b1-hihope-rzg2n.dtb \
+	r8a774c0-ek874.dtb \
+	r8a774e1-hihope-rzg2h.dtb \
+	r8a77950-ulcb.dtb \
+	r8a77950-salvator-x.dtb \
+	r8a77960-ulcb.dtb \
+	r8a77960-salvator-x.dtb \
+	r8a77965-ulcb.dtb \
+	r8a77965-salvator-x.dtb \
+	r8a77970-eagle.dtb \
+	r8a77970-v3msk.dtb \
+	r8a77980-condor.dtb \
+	r8a77980-v3hsk.dtb \
+	r8a77990-ebisu.dtb \
+	r8a77995-draak.dtb
 
 dtb-$(CONFIG_RCAR_GEN4) += \
-	r8a779a0-falcon-u-boot.dtb \
-	r8a779f0-spider-u-boot.dtb \
-	r8a779g0-white-hawk-u-boot.dtb \
-	r8a779h0-gray-hawk-u-boot.dtb
+	r8a779a0-falcon.dtb \
+	r8a779f0-spider.dtb \
+	r8a779g0-white-hawk.dtb \
+	r8a779h0-gray-hawk.dtb
 
 dtb-$(CONFIG_TARGET_RZG2L) += \
 	r9a07g044l2-smarc.dts
@@ -1100,7 +1100,7 @@
 endif
 
 dtb-$(CONFIG_RZA1) += \
-	r7s72100-gr-peach-u-boot.dtb
+	r7s72100-gr-peach.dtb
 
 dtb-$(CONFIG_ARCH_KEYSTONE) += keystone-k2hk-evm.dtb \
 	keystone-k2l-evm.dtb \