!4 【轻量级 PR】：Fix some simple errors

From: @lx1229207124 
Reviewed-by: @chainsx, @jianminw 
Signed-off-by: @jianminw

documents/raspberrypi/交叉编译内核.md

@@ -114,7 +114,7 @@
 
 ## 创建编译内核模块目录
 
-`mkdir ${WORKDIR}/ouput`
+`mkdir ${WORKDIR}/output`
 
 ## 编译内核模块
 

scripts/rockchip/bin/wireless/system/etc/firmware/nvram_AP6234.txt

@@ -52,7 +52,7 @@ pa1b1=-671
 pa1b2=-212
 tssifloor5gm=77
 
-#PA paramasdeters for high band
+#PA parameters for high band
 #pa1hib0=5320 default
 pa1hib0=5620
 #pa1hib1=-963

scripts/rockchip/bin/wireless/system/etc/firmware/nvram_ap6181.txt

@@ -1,5 +1,5 @@
 #AP6181_NVRAM_V1.2_05242017
-#adjuest PA parameter for g/n mode
+#adjust PA parameter for g/n mode
 manfid=0x2d0
 prodid=0x492
 vendid=0x14e4

scripts/rockchip/build_boot.sh

@@ -213,9 +213,9 @@ mk_boot() {
 
     LOG "start gen initrd..."
     dracut --no-kernel ${boot_dir}/initrd.img
-    LOG "gen initrd donw."
+    LOG "gen initrd done."
 
-    kernel_name=$(ls $boot_dir | grep vmlinu)
+    kernel_name=$(ls $boot_dir | grep vmlinuz)
     dtb_name=$(ls $boot_dir | grep dtb)
     LOG "gen extlinux config for $dtb_name"
     if [ "${platform}" == "rockchip" ];then